vendor buildah, image, storage, cni

Signed-off-by: Valentin Rothberg <rothberg@redhat.com>

71 files changed, 2197 insertions, 968 deletions

diff --git a/vendor/github.com/containernetworking/cni/README.md b/vendor/github.com/containernetworking/cni/README.md
index 65ccda9f9..3968d908a 100644
--- a/vendor/github.com/containernetworking/cni/README.md
+++ b/vendor/github.com/containernetworking/cni/README.md
@@ -9,9 +9,9 @@
 
 # Community Sync Meeting
 
-There is a community sync meeting for users and developers every 1-2 months. The next meeting will help on a Google Hangout and the link is in the [agenda](https://docs.google.com/document/d/10ECyT2mBGewsJUcmYmS8QNo1AcNgy2ZIe2xS7lShYhE/edit?usp=sharing) (Notes from previous meeting are also in this doc). 
+There is a community sync meeting for users and developers every 1-2 months. The next meeting will help on a Google Hangout and the link is in the [agenda](https://docs.google.com/document/d/10ECyT2mBGewsJUcmYmS8QNo1AcNgy2ZIe2xS7lShYhE/edit?usp=sharing) (Notes from previous meeting are also in this doc).
 
-The next meeting will be held on *Wednesday, October 4th* at *3:00pm UTC / 11:00am EDT / 8:00am PDT* [Add to Calendar](https://www.worldtimebuddy.com/?qm=1&lid=100,5,2643743,5391959&h=100&date=2017-10-04&sln=15-16).
+The next meeting will be held on *Wednesday, January 30th, 2019* at *4:00pm UTC / 11:00am EDT / 8:00am PDT* [Add to Calendar](https://www.worldtimebuddy.com/?qm=1&lid=100,5,2643743,5391959&h=100&date=2019-01-30&sln=16-17).
 
 ---
 
@@ -38,11 +38,13 @@ To avoid duplication, we think it is prudent to define a common interface betwee
 ## Who is using CNI?
 ### Container runtimes
 - [rkt - container engine](https://coreos.com/blog/rkt-cni-networking.html)
-- [Kubernetes - a system to simplify container operations](http://kubernetes.io/docs/admin/network-plugins/)
+- [Kubernetes - a system to simplify container operations](https://kubernetes.io/docs/admin/network-plugins/)
 - [OpenShift - Kubernetes with additional enterprise features](https://github.com/openshift/origin/blob/master/docs/openshift_networking_requirements.md)
 - [Cloud Foundry - a platform for cloud applications](https://github.com/cloudfoundry-incubator/cf-networking-release)
 - [Apache Mesos - a distributed systems kernel](https://github.com/apache/mesos/blob/master/docs/cni.md)
 - [Amazon ECS - a highly scalable, high performance container management service](https://aws.amazon.com/ecs/)
+- [Singularity - container platform optimized for HPC, EPC, and AI](https://github.com/sylabs/singularity)
+- [OpenSVC - orchestrator for legacy and containerized application stacks](https://docs.opensvc.com/latest/fr/agent.configure.cni.html)
 
 ### 3rd party plugins
 - [Project Calico - a layer 3 virtual network](https://github.com/projectcalico/calico-cni)
@@ -61,6 +63,10 @@ To avoid duplication, we think it is prudent to define a common interface betwee
 - [Amazon ECS CNI Plugins - a collection of CNI Plugins to configure containers with Amazon EC2 elastic network interfaces (ENIs)](https://github.com/aws/amazon-ecs-cni-plugins)
 - [Bonding CNI - a Link aggregating plugin to address failover and high availability network](https://github.com/Intel-Corp/bond-cni)
 - [ovn-kubernetes - an container network plugin built on Open vSwitch (OVS) and Open Virtual Networking (OVN) with support for both Linux and Windows](https://github.com/openvswitch/ovn-kubernetes)
+- [Juniper Contrail](https://www.juniper.net/cloud) / [TungstenFabric](https://tungstenfabric.io) -  Provides overlay SDN solution, delivering multicloud networking, hybrid cloud networking, simultaneous overlay-underlay support, network policy enforcement, network isolation, service chaining and flexible load balancing
+- [Knitter - a CNI plugin supporting multiple networking for Kubernetes](https://github.com/ZTE/Knitter)
+- [DANM - a CNI-compliant networking solution for TelCo workloads running on Kubernetes](https://github.com/nokia/danm)
+- [VMware NSX – a CNI plugin that enables automated NSX L2/L3 networking and L4/L7 Load Balancing; network isolation at the pod, node, and cluster level; and zero-trust security policy for your Kubernetes cluster.](https://docs.vmware.com/en/VMware-NSX-T/2.2/com.vmware.nsxt.ncp_kubernetes.doc/GUID-6AFA724E-BB62-4693-B95C-321E8DDEA7E1.html)
 
 The CNI team also maintains some [core plugins in a separate repository](https://github.com/containernetworking/plugins).
 
@@ -74,7 +80,7 @@ If you intend to contribute to code or documentation, please read [CONTRIBUTING.
 
 ### Requirements
 
-The CNI spec is language agnostic.  To use the Go language libraries in this repository, you'll need a recent version of Go.  Our [automated tests](https://travis-ci.org/containernetworking/cni/builds) cover Go versions 1.7 and 1.8.
+The CNI spec is language agnostic.  To use the Go language libraries in this repository, you'll need a recent version of Go.  You can find the Go versions covered by our [automated tests](https://travis-ci.org/containernetworking/cni/builds) in [.travis.yaml](.travis.yml).
 
 ### Reference Plugins
 
@@ -111,6 +117,7 @@ EOF
 $ cat >/etc/cni/net.d/99-loopback.conf <<EOF
 {
 	"cniVersion": "0.2.0",
+	"name": "lo",
 	"type": "loopback"
 }
 EOF
@@ -122,7 +129,7 @@ Next, build the plugins:
 
 ```bash
 $ cd $GOPATH/src/github.com/containernetworking/plugins
-$ ./build.sh
+$ ./build_linux.sh # or build_windows.sh
 ```
 
 Finally, execute a command (`ifconfig` in this example) in a private network namespace that has joined the `mynet` network:
diff --git a/vendor/github.com/containernetworking/cni/libcni/api.go b/vendor/github.com/containernetworking/cni/libcni/api.go
index d494e43d4..360733e74 100644
--- a/vendor/github.com/containernetworking/cni/libcni/api.go
+++ b/vendor/github.com/containernetworking/cni/libcni/api.go
@@ -15,6 +15,7 @@
 package libcni
 
 import (
+	"context"
 	"encoding/json"
 	"fmt"
 	"io/ioutil"
@@ -57,20 +58,25 @@ type NetworkConfig struct {
 }
 
 type NetworkConfigList struct {
-	Name       string
-	CNIVersion string
-	Plugins    []*NetworkConfig
-	Bytes      []byte
+	Name         string
+	CNIVersion   string
+	DisableCheck bool
+	Plugins      []*NetworkConfig
+	Bytes        []byte
 }
 
 type CNI interface {
-	AddNetworkList(net *NetworkConfigList, rt *RuntimeConf) (types.Result, error)
-	GetNetworkList(net *NetworkConfigList, rt *RuntimeConf) (types.Result, error)
-	DelNetworkList(net *NetworkConfigList, rt *RuntimeConf) error
+	AddNetworkList(ctx context.Context, net *NetworkConfigList, rt *RuntimeConf) (types.Result, error)
+	CheckNetworkList(ctx context.Context, net *NetworkConfigList, rt *RuntimeConf) error
+	DelNetworkList(ctx context.Context, net *NetworkConfigList, rt *RuntimeConf) error
 
-	AddNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error)
-	GetNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error)
-	DelNetwork(net *NetworkConfig, rt *RuntimeConf) error
+	AddNetwork(ctx context.Context, net *NetworkConfig, rt *RuntimeConf) (types.Result, error)
+	CheckNetwork(ctx context.Context, net *NetworkConfig, rt *RuntimeConf) error
+	DelNetwork(ctx context.Context, net *NetworkConfig, rt *RuntimeConf) error
+	GetNetworkCachedResult(net *NetworkConfig, rt *RuntimeConf) (types.Result, error)
+
+	ValidateNetworkList(ctx context.Context, net *NetworkConfigList) ([]string, error)
+	ValidateNetwork(ctx context.Context, net *NetworkConfig) ([]string, error)
 }
 
 type CNIConfig struct {
@@ -120,7 +126,7 @@ func buildOneConfig(name, cniVersion string, orig *NetworkConfig, prevResult typ
 // These capabilities arguments are filtered through the plugin's advertised
 // capabilities from its config JSON, and any keys in the CapabilityArgs
 // matching plugin capabilities are added to the "runtimeConfig" dictionary
-// sent to the plugin via JSON on stdin.  For exmaple, if the plugin's
+// sent to the plugin via JSON on stdin.  For example, if the plugin's
 // capabilities include "portMappings", and the CapabilityArgs map includes a
 // "portMappings" key, that key and its value are added to the "runtimeConfig"
 // dictionary to be passed to the plugin's stdin.
@@ -158,40 +164,12 @@ func (c *CNIConfig) ensureExec() invoke.Exec {
 	return c.exec
 }
 
-func (c *CNIConfig) addOrGetNetwork(command, name, cniVersion string, net *NetworkConfig, prevResult types.Result, rt *RuntimeConf) (types.Result, error) {
-	c.ensureExec()
-	pluginPath, err := c.exec.FindInPath(net.Network.Type, c.Path)
-	if err != nil {
-		return nil, err
-	}
-
-	newConf, err := buildOneConfig(name, cniVersion, net, prevResult, rt)
-	if err != nil {
-		return nil, err
-	}
-
-	return invoke.ExecPluginWithResult(pluginPath, newConf.Bytes, c.args(command, rt), c.exec)
-}
-
-// Note that only GET requests should pass an initial prevResult
-func (c *CNIConfig) addOrGetNetworkList(command string, prevResult types.Result, list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) {
-	var err error
-	for _, net := range list.Plugins {
-		prevResult, err = c.addOrGetNetwork(command, list.Name, list.CNIVersion, net, prevResult, rt)
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return prevResult, nil
-}
-
 func getResultCacheFilePath(netName string, rt *RuntimeConf) string {
 	cacheDir := rt.CacheDir
 	if cacheDir == "" {
 		cacheDir = CacheDir
 	}
-	return filepath.Join(cacheDir, "results", fmt.Sprintf("%s-%s", netName, rt.ContainerID))
+	return filepath.Join(cacheDir, "results", fmt.Sprintf("%s-%s-%s", netName, rt.ContainerID, rt.IfName))
 }
 
 func setCachedResult(result types.Result, netName string, rt *RuntimeConf) error {
@@ -243,37 +221,94 @@ func getCachedResult(netName, cniVersion string, rt *RuntimeConf) (types.Result,
 	return result, err
 }
 
-// AddNetworkList executes a sequence of plugins with the ADD command
-func (c *CNIConfig) AddNetworkList(list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) {
-	result, err := c.addOrGetNetworkList("ADD", nil, list, rt)
+// GetNetworkListCachedResult returns the cached Result of the previous
+// previous AddNetworkList() operation for a network list, or an error.
+func (c *CNIConfig) GetNetworkListCachedResult(list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) {
+	return getCachedResult(list.Name, list.CNIVersion, rt)
+}
+
+// GetNetworkCachedResult returns the cached Result of the previous
+// previous AddNetwork() operation for a network, or an error.
+func (c *CNIConfig) GetNetworkCachedResult(net *NetworkConfig, rt *RuntimeConf) (types.Result, error) {
+	return getCachedResult(net.Network.Name, net.Network.CNIVersion, rt)
+}
+
+func (c *CNIConfig) addNetwork(ctx context.Context, name, cniVersion string, net *NetworkConfig, prevResult types.Result, rt *RuntimeConf) (types.Result, error) {
+	c.ensureExec()
+	pluginPath, err := c.exec.FindInPath(net.Network.Type, c.Path)
 	if err != nil {
 		return nil, err
 	}
 
+	newConf, err := buildOneConfig(name, cniVersion, net, prevResult, rt)
+	if err != nil {
+		return nil, err
+	}
+
+	return invoke.ExecPluginWithResult(ctx, pluginPath, newConf.Bytes, c.args("ADD", rt), c.exec)
+}
+
+// AddNetworkList executes a sequence of plugins with the ADD command
+func (c *CNIConfig) AddNetworkList(ctx context.Context, list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) {
+	var err error
+	var result types.Result
+	for _, net := range list.Plugins {
+		result, err = c.addNetwork(ctx, list.Name, list.CNIVersion, net, result, rt)
+		if err != nil {
+			return nil, err
+		}
+	}
+
 	if err = setCachedResult(result, list.Name, rt); err != nil {
-		return nil, fmt.Errorf("failed to set network '%s' cached result: %v", list.Name, err)
+		return nil, fmt.Errorf("failed to set network %q cached result: %v", list.Name, err)
 	}
 
 	return result, nil
 }
 
-// GetNetworkList executes a sequence of plugins with the GET command
-func (c *CNIConfig) GetNetworkList(list *NetworkConfigList, rt *RuntimeConf) (types.Result, error) {
-	// GET was added in CNI spec version 0.4.0 and higher
+func (c *CNIConfig) checkNetwork(ctx context.Context, name, cniVersion string, net *NetworkConfig, prevResult types.Result, rt *RuntimeConf) error {
+	c.ensureExec()
+	pluginPath, err := c.exec.FindInPath(net.Network.Type, c.Path)
+	if err != nil {
+		return err
+	}
+
+	newConf, err := buildOneConfig(name, cniVersion, net, prevResult, rt)
+	if err != nil {
+		return err
+	}
+
+	return invoke.ExecPluginWithoutResult(ctx, pluginPath, newConf.Bytes, c.args("CHECK", rt), c.exec)
+}
+
+// CheckNetworkList executes a sequence of plugins with the CHECK command
+func (c *CNIConfig) CheckNetworkList(ctx context.Context, list *NetworkConfigList, rt *RuntimeConf) error {
+	// CHECK was added in CNI spec version 0.4.0 and higher
 	if gtet, err := version.GreaterThanOrEqualTo(list.CNIVersion, "0.4.0"); err != nil {
-		return nil, err
+		return err
 	} else if !gtet {
-		return nil, fmt.Errorf("configuration version %q does not support the GET command", list.CNIVersion)
+		return fmt.Errorf("configuration version %q does not support the CHECK command", list.CNIVersion)
+	}
+
+	if list.DisableCheck {
+		return nil
 	}
 
 	cachedResult, err := getCachedResult(list.Name, list.CNIVersion, rt)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get network '%s' cached result: %v", list.Name, err)
+		return fmt.Errorf("failed to get network %q cached result: %v", list.Name, err)
+	}
+
+	for _, net := range list.Plugins {
+		if err := c.checkNetwork(ctx, list.Name, list.CNIVersion, net, cachedResult, rt); err != nil {
+			return err
+		}
 	}
-	return c.addOrGetNetworkList("GET", cachedResult, list, rt)
+
+	return nil
 }
 
-func (c *CNIConfig) delNetwork(name, cniVersion string, net *NetworkConfig, prevResult types.Result, rt *RuntimeConf) error {
+func (c *CNIConfig) delNetwork(ctx context.Context, name, cniVersion string, net *NetworkConfig, prevResult types.Result, rt *RuntimeConf) error {
 	c.ensureExec()
 	pluginPath, err := c.exec.FindInPath(net.Network.Type, c.Path)
 	if err != nil {
@@ -285,11 +320,11 @@ func (c *CNIConfig) delNetwork(name, cniVersion string, net *NetworkConfig, prev
 		return err
 	}
 
-	return invoke.ExecPluginWithoutResult(pluginPath, newConf.Bytes, c.args("DEL", rt), c.exec)
+	return invoke.ExecPluginWithoutResult(ctx, pluginPath, newConf.Bytes, c.args("DEL", rt), c.exec)
 }
 
 // DelNetworkList executes a sequence of plugins with the DEL command
-func (c *CNIConfig) DelNetworkList(list *NetworkConfigList, rt *RuntimeConf) error {
+func (c *CNIConfig) DelNetworkList(ctx context.Context, list *NetworkConfigList, rt *RuntimeConf) error {
 	var cachedResult types.Result
 
 	// Cached result on DEL was added in CNI spec version 0.4.0 and higher
@@ -298,13 +333,13 @@ func (c *CNIConfig) DelNetworkList(list *NetworkConfigList, rt *RuntimeConf) err
 	} else if gtet {
 		cachedResult, err = getCachedResult(list.Name, list.CNIVersion, rt)
 		if err != nil {
-			return fmt.Errorf("failed to get network '%s' cached result: %v", list.Name, err)
+			return fmt.Errorf("failed to get network %q cached result: %v", list.Name, err)
 		}
 	}
 
 	for i := len(list.Plugins) - 1; i >= 0; i-- {
 		net := list.Plugins[i]
-		if err := c.delNetwork(list.Name, list.CNIVersion, net, cachedResult, rt); err != nil {
+		if err := c.delNetwork(ctx, list.Name, list.CNIVersion, net, cachedResult, rt); err != nil {
 			return err
 		}
 	}
@@ -314,37 +349,37 @@ func (c *CNIConfig) DelNetworkList(list *NetworkConfigList, rt *RuntimeConf) err
 }
 
 // AddNetwork executes the plugin with the ADD command
-func (c *CNIConfig) AddNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error) {
-	result, err := c.addOrGetNetwork("ADD", net.Network.Name, net.Network.CNIVersion, net, nil, rt)
+func (c *CNIConfig) AddNetwork(ctx context.Context, net *NetworkConfig, rt *RuntimeConf) (types.Result, error) {
+	result, err := c.addNetwork(ctx, net.Network.Name, net.Network.CNIVersion, net, nil, rt)
 	if err != nil {
 		return nil, err
 	}
 
 	if err = setCachedResult(result, net.Network.Name, rt); err != nil {
-		return nil, fmt.Errorf("failed to set network '%s' cached result: %v", net.Network.Name, err)
+		return nil, fmt.Errorf("failed to set network %q cached result: %v", net.Network.Name, err)
 	}
 
 	return result, nil
 }
 
-// GetNetwork executes the plugin with the GET command
-func (c *CNIConfig) GetNetwork(net *NetworkConfig, rt *RuntimeConf) (types.Result, error) {
-	// GET was added in CNI spec version 0.4.0 and higher
+// CheckNetwork executes the plugin with the CHECK command
+func (c *CNIConfig) CheckNetwork(ctx context.Context, net *NetworkConfig, rt *RuntimeConf) error {
+	// CHECK was added in CNI spec version 0.4.0 and higher
 	if gtet, err := version.GreaterThanOrEqualTo(net.Network.CNIVersion, "0.4.0"); err != nil {
-		return nil, err
+		return err
 	} else if !gtet {
-		return nil, fmt.Errorf("configuration version %q does not support the GET command", net.Network.CNIVersion)
+		return fmt.Errorf("configuration version %q does not support the CHECK command", net.Network.CNIVersion)
 	}
 
 	cachedResult, err := getCachedResult(net.Network.Name, net.Network.CNIVersion, rt)
 	if err != nil {
-		return nil, fmt.Errorf("failed to get network '%s' cached result: %v", net.Network.Name, err)
+		return fmt.Errorf("failed to get network %q cached result: %v", net.Network.Name, err)
 	}
-	return c.addOrGetNetwork("GET", net.Network.Name, net.Network.CNIVersion, net, cachedResult, rt)
+	return c.checkNetwork(ctx, net.Network.Name, net.Network.CNIVersion, net, cachedResult, rt)
 }
 
 // DelNetwork executes the plugin with the DEL command
-func (c *CNIConfig) DelNetwork(net *NetworkConfig, rt *RuntimeConf) error {
+func (c *CNIConfig) DelNetwork(ctx context.Context, net *NetworkConfig, rt *RuntimeConf) error {
 	var cachedResult types.Result
 
 	// Cached result on DEL was added in CNI spec version 0.4.0 and higher
@@ -353,27 +388,99 @@ func (c *CNIConfig) DelNetwork(net *NetworkConfig, rt *RuntimeConf) error {
 	} else if gtet {
 		cachedResult, err = getCachedResult(net.Network.Name, net.Network.CNIVersion, rt)
 		if err != nil {
-			return fmt.Errorf("failed to get network '%s' cached result: %v", net.Network.Name, err)
+			return fmt.Errorf("failed to get network %q cached result: %v", net.Network.Name, err)
 		}
 	}
 
-	if err := c.delNetwork(net.Network.Name, net.Network.CNIVersion, net, cachedResult, rt); err != nil {
+	if err := c.delNetwork(ctx, net.Network.Name, net.Network.CNIVersion, net, cachedResult, rt); err != nil {
 		return err
 	}
 	_ = delCachedResult(net.Network.Name, rt)
 	return nil
 }
 
+// ValidateNetworkList checks that a configuration is reasonably valid.
+// - all the specified plugins exist on disk
+// - every plugin supports the desired version.
+//
+// Returns a list of all capabilities supported by the configuration, or error
+func (c *CNIConfig) ValidateNetworkList(ctx context.Context, list *NetworkConfigList) ([]string, error) {
+	version := list.CNIVersion
+
+	// holding map for seen caps (in case of duplicates)
+	caps := map[string]interface{}{}
+
+	errs := []error{}
+	for _, net := range list.Plugins {
+		if err := c.validatePlugin(ctx, net.Network.Type, version); err != nil {
+			errs = append(errs, err)
+		}
+		for c, enabled := range net.Network.Capabilities {
+			if !enabled {
+				continue
+			}
+			caps[c] = struct{}{}
+		}
+	}
+
+	if len(errs) > 0 {
+		return nil, fmt.Errorf("%v", errs)
+	}
+
+	// make caps list
+	cc := make([]string, 0, len(caps))
+	for c := range caps {
+		cc = append(cc, c)
+	}
+
+	return cc, nil
+}
+
+// ValidateNetwork checks that a configuration is reasonably valid.
+// It uses the same logic as ValidateNetworkList)
+// Returns a list of capabilities
+func (c *CNIConfig) ValidateNetwork(ctx context.Context, net *NetworkConfig) ([]string, error) {
+	caps := []string{}
+	for c, ok := range net.Network.Capabilities {
+		if ok {
+			caps = append(caps, c)
+		}
+	}
+	if err := c.validatePlugin(ctx, net.Network.Type, net.Network.CNIVersion); err != nil {
+		return nil, err
+	}
+	return caps, nil
+}
+
+// validatePlugin checks that an individual plugin's configuration is sane
+func (c *CNIConfig) validatePlugin(ctx context.Context, pluginName, expectedVersion string) error {
+	pluginPath, err := invoke.FindInPath(pluginName, c.Path)
+	if err != nil {
+		return err
+	}
+
+	vi, err := invoke.GetVersionInfo(ctx, pluginPath, c.exec)
+	if err != nil {
+		return err
+	}
+	for _, vers := range vi.SupportedVersions() {
+		if vers == expectedVersion {
+			return nil
+		}
+	}
+	return fmt.Errorf("plugin %s does not support config version %q", pluginName, expectedVersion)
+}
+
 // GetVersionInfo reports which versions of the CNI spec are supported by
 // the given plugin.
-func (c *CNIConfig) GetVersionInfo(pluginType string) (version.PluginInfo, error) {
+func (c *CNIConfig) GetVersionInfo(ctx context.Context, pluginType string) (version.PluginInfo, error) {
 	c.ensureExec()
 	pluginPath, err := c.exec.FindInPath(pluginType, c.Path)
 	if err != nil {
 		return nil, err
 	}
 
-	return invoke.GetVersionInfo(pluginPath, c.exec)
+	return invoke.GetVersionInfo(ctx, pluginPath, c.exec)
 }
 
 // =====
diff --git a/vendor/github.com/containernetworking/cni/libcni/conf.go b/vendor/github.com/containernetworking/cni/libcni/conf.go
index 9834d715b..ea56c509d 100644
--- a/vendor/github.com/containernetworking/cni/libcni/conf.go
+++ b/vendor/github.com/containernetworking/cni/libcni/conf.go
@@ -83,10 +83,19 @@ func ConfListFromBytes(bytes []byte) (*NetworkConfigList, error) {
 		}
 	}
 
+	disableCheck := false
+	if rawDisableCheck, ok := rawList["disableCheck"]; ok {
+		disableCheck, ok = rawDisableCheck.(bool)
+		if !ok {
+			return nil, fmt.Errorf("error parsing configuration list: invalid disableCheck type %T", rawDisableCheck)
+		}
+	}
+
 	list := &NetworkConfigList{
-		Name:       name,
-		CNIVersion: cniVersion,
-		Bytes:      bytes,
+		Name:         name,
+		DisableCheck: disableCheck,
+		CNIVersion:   cniVersion,
+		Bytes:        bytes,
 	}
 
 	var plugins []interface{}
diff --git a/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go b/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go
index 21efdf802..30b4672f1 100644
--- a/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go
+++ b/vendor/github.com/containernetworking/cni/pkg/invoke/delegate.go
@@ -15,6 +15,7 @@
 package invoke
 
 import (
+	"context"
 	"fmt"
 	"os"
 	"path/filepath"
@@ -22,54 +23,53 @@ import (
 	"github.com/containernetworking/cni/pkg/types"
 )
 
-func delegateAddOrGet(command, delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) {
+func delegateCommon(expectedCommand, delegatePlugin string, exec Exec) (string, Exec, error) {
 	if exec == nil {
 		exec = defaultExec
 	}
 
+	if os.Getenv("CNI_COMMAND") != expectedCommand {
+		return "", nil, fmt.Errorf("CNI_COMMAND is not " + expectedCommand)
+	}
+
 	paths := filepath.SplitList(os.Getenv("CNI_PATH"))
 	pluginPath, err := exec.FindInPath(delegatePlugin, paths)
 	if err != nil {
-		return nil, err
+		return "", nil, err
 	}
 
-	return ExecPluginWithResult(pluginPath, netconf, ArgsFromEnv(), exec)
+	return pluginPath, exec, nil
 }
 
 // DelegateAdd calls the given delegate plugin with the CNI ADD action and
 // JSON configuration
-func DelegateAdd(delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) {
-	if os.Getenv("CNI_COMMAND") != "ADD" {
-		return nil, fmt.Errorf("CNI_COMMAND is not ADD")
+func DelegateAdd(ctx context.Context, delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) {
+	pluginPath, realExec, err := delegateCommon("ADD", delegatePlugin, exec)
+	if err != nil {
+		return nil, err
 	}
-	return delegateAddOrGet("ADD", delegatePlugin, netconf, exec)
+
+	return ExecPluginWithResult(ctx, pluginPath, netconf, ArgsFromEnv(), realExec)
 }
 
-// DelegateGet calls the given delegate plugin with the CNI GET action and
+// DelegateCheck calls the given delegate plugin with the CNI CHECK action and
 // JSON configuration
-func DelegateGet(delegatePlugin string, netconf []byte, exec Exec) (types.Result, error) {
-	if os.Getenv("CNI_COMMAND") != "GET" {
-		return nil, fmt.Errorf("CNI_COMMAND is not GET")
+func DelegateCheck(ctx context.Context, delegatePlugin string, netconf []byte, exec Exec) error {
+	pluginPath, realExec, err := delegateCommon("CHECK", delegatePlugin, exec)
+	if err != nil {
+		return err
 	}
-	return delegateAddOrGet("GET", delegatePlugin, netconf, exec)
+
+	return ExecPluginWithoutResult(ctx, pluginPath, netconf, ArgsFromEnv(), realExec)
 }
 
 // DelegateDel calls the given delegate plugin with the CNI DEL action and
 // JSON configuration
-func DelegateDel(delegatePlugin string, netconf []byte, exec Exec) error {
-	if exec == nil {
-		exec = defaultExec
-	}
-
-	if os.Getenv("CNI_COMMAND") != "DEL" {
-		return fmt.Errorf("CNI_COMMAND is not DEL")
-	}
-
-	paths := filepath.SplitList(os.Getenv("CNI_PATH"))
-	pluginPath, err := exec.FindInPath(delegatePlugin, paths)
+func DelegateDel(ctx context.Context, delegatePlugin string, netconf []byte, exec Exec) error {
+	pluginPath, realExec, err := delegateCommon("DEL", delegatePlugin, exec)
 	if err != nil {
 		return err
 	}
 
-	return ExecPluginWithoutResult(pluginPath, netconf, ArgsFromEnv(), exec)
+	return ExecPluginWithoutResult(ctx, pluginPath, netconf, ArgsFromEnv(), realExec)
 }
diff --git a/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go b/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go
index cf019d3a0..8e6d30b82 100644
--- a/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go
+++ b/vendor/github.com/containernetworking/cni/pkg/invoke/exec.go
@@ -15,6 +15,7 @@
 package invoke
 
 import (
+	"context"
 	"fmt"
 	"os"
 
@@ -26,7 +27,7 @@ import (
 // and executing a CNI plugin. Tests may provide a fake implementation
 // to avoid writing fake plugins to temporary directories during the test.
 type Exec interface {
-	ExecPlugin(pluginPath string, stdinData []byte, environ []string) ([]byte, error)
+	ExecPlugin(ctx context.Context, pluginPath string, stdinData []byte, environ []string) ([]byte, error)
 	FindInPath(plugin string, paths []string) (string, error)
 	Decode(jsonBytes []byte) (version.PluginInfo, error)
 }
@@ -72,12 +73,12 @@ type Exec interface {
 //	return "", fmt.Errorf("failed to find plugin %s in paths %v", plugin, paths)
 //}
 
-func ExecPluginWithResult(pluginPath string, netconf []byte, args CNIArgs, exec Exec) (types.Result, error) {
+func ExecPluginWithResult(ctx context.Context, pluginPath string, netconf []byte, args CNIArgs, exec Exec) (types.Result, error) {
 	if exec == nil {
 		exec = defaultExec
 	}
 
-	stdoutBytes, err := exec.ExecPlugin(pluginPath, netconf, args.AsEnv())
+	stdoutBytes, err := exec.ExecPlugin(ctx, pluginPath, netconf, args.AsEnv())
 	if err != nil {
 		return nil, err
 	}
@@ -92,11 +93,11 @@ func ExecPluginWithResult(pluginPath string, netconf []byte, args CNIArgs, exec
 	return version.NewResult(confVersion, stdoutBytes)
 }
 
-func ExecPluginWithoutResult(pluginPath string, netconf []byte, args CNIArgs, exec Exec) error {
+func ExecPluginWithoutResult(ctx context.Context, pluginPath string, netconf []byte, args CNIArgs, exec Exec) error {
 	if exec == nil {
 		exec = defaultExec
 	}
-	_, err := exec.ExecPlugin(pluginPath, netconf, args.AsEnv())
+	_, err := exec.ExecPlugin(ctx, pluginPath, netconf, args.AsEnv())
 	return err
 }
 
@@ -104,7 +105,7 @@ func ExecPluginWithoutResult(pluginPath string, netconf []byte, args CNIArgs, ex
 // For recent-enough plugins, it uses the information returned by the VERSION
 // command.  For older plugins which do not recognize that command, it reports
 // version 0.1.0
-func GetVersionInfo(pluginPath string, exec Exec) (version.PluginInfo, error) {
+func GetVersionInfo(ctx context.Context, pluginPath string, exec Exec) (version.PluginInfo, error) {
 	if exec == nil {
 		exec = defaultExec
 	}
@@ -117,7 +118,7 @@ func GetVersionInfo(pluginPath string, exec Exec) (version.PluginInfo, error) {
 		Path:   "dummy",
 	}
 	stdin := []byte(fmt.Sprintf(`{"cniVersion":%q}`, version.Current()))
-	stdoutBytes, err := exec.ExecPlugin(pluginPath, stdin, args.AsEnv())
+	stdoutBytes, err := exec.ExecPlugin(ctx, pluginPath, stdin, args.AsEnv())
 	if err != nil {
 		if err.Error() == "unknown CNI_COMMAND: VERSION" {
 			return version.PluginSupports("0.1.0"), nil
diff --git a/vendor/github.com/containernetworking/cni/pkg/invoke/os_unix.go b/vendor/github.com/containernetworking/cni/pkg/invoke/os_unix.go
index bab5737a9..9bcfb4553 100644
--- a/vendor/github.com/containernetworking/cni/pkg/invoke/os_unix.go
+++ b/vendor/github.com/containernetworking/cni/pkg/invoke/os_unix.go
@@ -12,7 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
-// +build darwin dragonfly freebsd linux netbsd opensbd solaris
+// +build darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package invoke
 
diff --git a/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go b/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go
index a598f09c2..e5b86634d 100644
--- a/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go
+++ b/vendor/github.com/containernetworking/cni/pkg/invoke/raw_exec.go
@@ -16,6 +16,7 @@ package invoke
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -28,17 +29,13 @@ type RawExec struct {
 	Stderr io.Writer
 }
 
-func (e *RawExec) ExecPlugin(pluginPath string, stdinData []byte, environ []string) ([]byte, error) {
+func (e *RawExec) ExecPlugin(ctx context.Context, pluginPath string, stdinData []byte, environ []string) ([]byte, error) {
 	stdout := &bytes.Buffer{}
-
-	c := exec.Cmd{
-		Env:    environ,
-		Path:   pluginPath,
-		Args:   []string{pluginPath},
-		Stdin:  bytes.NewBuffer(stdinData),
-		Stdout: stdout,
-		Stderr: e.Stderr,
-	}
+	c := exec.CommandContext(ctx, pluginPath)
+	c.Env = environ
+	c.Stdin = bytes.NewBuffer(stdinData)
+	c.Stdout = stdout
+	c.Stderr = e.Stderr
 	if err := c.Run(); err != nil {
 		return nil, pluginErr(err, stdout.Bytes())
 	}
diff --git a/vendor/github.com/containernetworking/cni/pkg/types/020/types.go b/vendor/github.com/containernetworking/cni/pkg/types/020/types.go
index 2833aba78..53256167f 100644
--- a/vendor/github.com/containernetworking/cni/pkg/types/020/types.go
+++ b/vendor/github.com/containernetworking/cni/pkg/types/020/types.go
@@ -17,6 +17,7 @@ package types020
 import (
 	"encoding/json"
 	"fmt"
+	"io"
 	"net"
 	"os"
 
@@ -73,11 +74,15 @@ func (r *Result) GetAsVersion(version string) (types.Result, error) {
 }
 
 func (r *Result) Print() error {
+	return r.PrintTo(os.Stdout)
+}
+
+func (r *Result) PrintTo(writer io.Writer) error {
 	data, err := json.MarshalIndent(r, "", "    ")
 	if err != nil {
 		return err
 	}
-	_, err = os.Stdout.Write(data)
+	_, err = writer.Write(data)
 	return err
 }
 
diff --git a/vendor/github.com/containernetworking/cni/pkg/types/current/types.go b/vendor/github.com/containernetworking/cni/pkg/types/current/types.go
index 92980c1a7..7267a2e6d 100644
--- a/vendor/github.com/containernetworking/cni/pkg/types/current/types.go
+++ b/vendor/github.com/containernetworking/cni/pkg/types/current/types.go
@@ -17,6 +17,7 @@ package current
 import (
 	"encoding/json"
 	"fmt"
+	"io"
 	"net"
 	"os"
 
@@ -75,13 +76,9 @@ func convertFrom020(result types.Result) (*Result, error) {
 			Gateway: oldResult.IP4.Gateway,
 		})
 		for _, route := range oldResult.IP4.Routes {
-			gw := route.GW
-			if gw == nil {
-				gw = oldResult.IP4.Gateway
-			}
 			newResult.Routes = append(newResult.Routes, &types.Route{
 				Dst: route.Dst,
-				GW:  gw,
+				GW:  route.GW,
 			})
 		}
 	}
@@ -93,21 +90,13 @@ func convertFrom020(result types.Result) (*Result, error) {
 			Gateway: oldResult.IP6.Gateway,
 		})
 		for _, route := range oldResult.IP6.Routes {
-			gw := route.GW
-			if gw == nil {
-				gw = oldResult.IP6.Gateway
-			}
 			newResult.Routes = append(newResult.Routes, &types.Route{
 				Dst: route.Dst,
-				GW:  gw,
+				GW:  route.GW,
 			})
 		}
 	}
 
-	if len(newResult.IPs) == 0 {
-		return nil, fmt.Errorf("cannot convert: no valid IP addresses")
-	}
-
 	return newResult, nil
 }
 
@@ -206,11 +195,15 @@ func (r *Result) GetAsVersion(version string) (types.Result, error) {
 }
 
 func (r *Result) Print() error {
+	return r.PrintTo(os.Stdout)
+}
+
+func (r *Result) PrintTo(writer io.Writer) error {
 	data, err := json.MarshalIndent(r, "", "    ")
 	if err != nil {
 		return err
 	}
-	_, err = os.Stdout.Write(data)
+	_, err = writer.Write(data)
 	return err
 }
 
diff --git a/vendor/github.com/containernetworking/cni/pkg/types/types.go b/vendor/github.com/containernetworking/cni/pkg/types/types.go
index 4684a3207..d0d11006a 100644
--- a/vendor/github.com/containernetworking/cni/pkg/types/types.go
+++ b/vendor/github.com/containernetworking/cni/pkg/types/types.go
@@ -18,6 +18,7 @@ import (
 	"encoding/json"
 	"errors"
 	"fmt"
+	"io"
 	"net"
 	"os"
 )
@@ -65,6 +66,9 @@ type NetConf struct {
 	Capabilities map[string]bool `json:"capabilities,omitempty"`
 	IPAM         IPAM            `json:"ipam,omitempty"`
 	DNS          DNS             `json:"dns"`
+
+	RawPrevResult map[string]interface{} `json:"prevResult,omitempty"`
+	PrevResult    Result                 `json:"-"`
 }
 
 type IPAM struct {
@@ -75,15 +79,16 @@ type IPAM struct {
 type NetConfList struct {
 	CNIVersion string `json:"cniVersion,omitempty"`
 
-	Name    string     `json:"name,omitempty"`
-	Plugins []*NetConf `json:"plugins,omitempty"`
+	Name         string     `json:"name,omitempty"`
+	DisableCheck bool       `json:"disableCheck,omitempty"`
+	Plugins      []*NetConf `json:"plugins,omitempty"`
 }
 
 type ResultFactoryFunc func([]byte) (Result, error)
 
 // Result is an interface that provides the result of plugin execution
 type Result interface {
-	// The highest CNI specification result verison the result supports
+	// The highest CNI specification result version the result supports
 	// without having to convert
 	Version() string
 
@@ -94,6 +99,9 @@ type Result interface {
 	// Prints the result in JSON format to stdout
 	Print() error
 
+	// Prints the result in JSON format to provided writer
+	PrintTo(writer io.Writer) error
+
 	// Returns a JSON string representation of the result
 	String() string
 }
diff --git a/vendor/github.com/containernetworking/cni/pkg/version/plugin.go b/vendor/github.com/containernetworking/cni/pkg/version/plugin.go
index 612335a81..1df427243 100644
--- a/vendor/github.com/containernetworking/cni/pkg/version/plugin.go
+++ b/vendor/github.com/containernetworking/cni/pkg/version/plugin.go
@@ -86,9 +86,13 @@ func (*PluginDecoder) Decode(jsonBytes []byte) (PluginInfo, error) {
 // minor, and micro numbers or returns an error
 func ParseVersion(version string) (int, int, int, error) {
 	var major, minor, micro int
+	if version == "" {
+		return -1, -1, -1, fmt.Errorf("invalid version %q: the version is empty", version)
+	}
+
 	parts := strings.Split(version, ".")
-	if len(parts) == 0 || len(parts) >= 4 {
-		return -1, -1, -1, fmt.Errorf("invalid version %q: too many or too few parts", version)
+	if len(parts) >= 4 {
+		return -1, -1, -1, fmt.Errorf("invalid version %q: too many parts", version)
 	}
 
 	major, err := strconv.Atoi(parts[0])
@@ -114,7 +118,7 @@ func ParseVersion(version string) (int, int, int, error) {
 }
 
 // GreaterThanOrEqualTo takes two string versions, parses them into major/minor/micro
-// nubmers, and compares them to determine whether the first version is greater
+// numbers, and compares them to determine whether the first version is greater
 // than or equal to the second
 func GreaterThanOrEqualTo(version, otherVersion string) (bool, error) {
 	firstMajor, firstMinor, firstMicro, err := ParseVersion(version)
diff --git a/vendor/github.com/containernetworking/cni/pkg/version/version.go b/vendor/github.com/containernetworking/cni/pkg/version/version.go
index c8e46d55b..8f3508e61 100644
--- a/vendor/github.com/containernetworking/cni/pkg/version/version.go
+++ b/vendor/github.com/containernetworking/cni/pkg/version/version.go
@@ -15,6 +15,7 @@
 package version
 
 import (
+	"encoding/json"
 	"fmt"
 
 	"github.com/containernetworking/cni/pkg/types"
@@ -59,3 +60,24 @@ func NewResult(version string, resultBytes []byte) (types.Result, error) {
 
 	return nil, fmt.Errorf("unsupported CNI result version %q", version)
 }
+
+// ParsePrevResult parses a prevResult in a NetConf structure and sets
+// the NetConf's PrevResult member to the parsed Result object.
+func ParsePrevResult(conf *types.NetConf) error {
+	if conf.RawPrevResult == nil {
+		return nil
+	}
+
+	resultBytes, err := json.Marshal(conf.RawPrevResult)
+	if err != nil {
+		return fmt.Errorf("could not serialize prevResult: %v", err)
+	}
+
+	conf.RawPrevResult = nil
+	conf.PrevResult, err = NewResult(conf.CNIVersion, resultBytes)
+	if err != nil {
+		return fmt.Errorf("could not parse prevResult: %v", err)
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/containers/buildah/README.md b/vendor/github.com/containers/buildah/README.md
index 913a4336f..827d5a87f 100644
--- a/vendor/github.com/containers/buildah/README.md
+++ b/vendor/github.com/containers/buildah/README.md
@@ -78,21 +78,21 @@ From [`./examples/lighttpd.sh`](examples/lighttpd.sh):
 $ cat > lighttpd.sh <<"EOF"
 #!/bin/bash -x
 
-ctr1=`buildah from ${1:-fedora}`
+ctr1=$(buildah from "${1:-fedora}")
 
 ## Get all updates and install our minimal httpd server
-buildah run $ctr1 -- dnf update -y
-buildah run $ctr1 -- dnf install -y lighttpd
+buildah run "$ctr1" -- dnf update -y
+buildah run "$ctr1" -- dnf install -y lighttpd
 
 ## Include some buildtime annotations
-buildah config --annotation "com.example.build.host=$(uname -n)" $ctr1
+buildah config --annotation "com.example.build.host=$(uname -n)" "$ctr1"
 
 ## Run our server and expose the port
-buildah config --cmd "/usr/sbin/lighttpd -D -f /etc/lighttpd/lighttpd.conf" $ctr1
-buildah config --port 80 $ctr1
+buildah config --cmd "/usr/sbin/lighttpd -D -f /etc/lighttpd/lighttpd.conf" "$ctr1"
+buildah config --port 80 "$ctr1"
 
 ## Commit this container to an image name
-buildah commit $ctr1 ${2:-$USER/lighttpd}
+buildah commit "$ctr1" "${2:-$USER/lighttpd}"
 EOF
 
 $ chmod +x lighttpd.sh
diff --git a/vendor/github.com/containers/buildah/add.go b/vendor/github.com/containers/buildah/add.go
index 6542b0377..250d75b24 100644
--- a/vendor/github.com/containers/buildah/add.go
+++ b/vendor/github.com/containers/buildah/add.go
@@ -11,8 +11,8 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/containers/buildah/pkg/chrootuser"
 	"github.com/containers/buildah/util"
-	"github.com/containers/libpod/pkg/chrootuser"
 	"github.com/containers/storage/pkg/archive"
 	"github.com/containers/storage/pkg/idtools"
 	"github.com/opencontainers/runtime-spec/specs-go"
@@ -32,6 +32,10 @@ type AddAndCopyOptions struct {
 	// If the sources include directory trees, Hasher will be passed
 	// tar-format archives of the directory trees.
 	Hasher io.Writer
+	// Exludes contents in the .dockerignore file
+	Excludes []string
+	// current directory on host
+	ContextDir string
 }
 
 // addURL copies the contents of the source URL to the destination.  This is
@@ -84,6 +88,7 @@ func addURL(destination, srcurl string, owner idtools.IDPair, hasher io.Writer)
 // filesystem, optionally extracting contents of local files that look like
 // non-empty archives.
 func (b *Builder) Add(destination string, extract bool, options AddAndCopyOptions, source ...string) error {
+	excludes := DockerIgnoreHelper(options.Excludes, options.ContextDir)
 	mountPoint, err := b.Mount(b.MountLabel)
 	if err != nil {
 		return err
@@ -139,6 +144,71 @@ func (b *Builder) Add(destination string, extract bool, options AddAndCopyOption
 	copyFileWithTar := b.copyFileWithTar(&containerOwner, options.Hasher)
 	copyWithTar := b.copyWithTar(&containerOwner, options.Hasher)
 	untarPath := b.untarPath(nil, options.Hasher)
+	err = addHelper(excludes, extract, dest, destfi, hostOwner, options, copyFileWithTar, copyWithTar, untarPath, source...)
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+// user returns the user (and group) information which the destination should belong to.
+func (b *Builder) user(mountPoint string, userspec string) (specs.User, error) {
+	if userspec == "" {
+		userspec = b.User()
+	}
+
+	uid, gid, err := chrootuser.GetUser(mountPoint, userspec)
+	u := specs.User{
+		UID:      uid,
+		GID:      gid,
+		Username: userspec,
+	}
+	if !strings.Contains(userspec, ":") {
+		groups, err2 := chrootuser.GetAdditionalGroupsForUser(mountPoint, uint64(u.UID))
+		if err2 != nil {
+			if errors.Cause(err2) != chrootuser.ErrNoSuchUser && err == nil {
+				err = err2
+			}
+		} else {
+			u.AdditionalGids = groups
+		}
+
+	}
+	return u, err
+}
+
+// DockerIgnore struct keep info from .dockerignore
+type DockerIgnore struct {
+	ExcludePath string
+	IsExcluded  bool
+}
+
+// DockerIgnoreHelper returns the lines from .dockerignore file without the comments
+// and reverses the order
+func DockerIgnoreHelper(lines []string, contextDir string) []DockerIgnore {
+	var excludes []DockerIgnore
+	// the last match of a file in the .dockerignmatches determines whether it is included or excluded
+	// reverse the order
+	for i := len(lines) - 1; i >= 0; i-- {
+		exclude := lines[i]
+		// ignore the comment in .dockerignore
+		if strings.HasPrefix(exclude, "#") || len(exclude) == 0 {
+			continue
+		}
+		excludeFlag := true
+		if strings.HasPrefix(exclude, "!") {
+			exclude = strings.TrimPrefix(exclude, "!")
+			excludeFlag = false
+		}
+		excludes = append(excludes, DockerIgnore{ExcludePath: filepath.Join(contextDir, exclude), IsExcluded: excludeFlag})
+	}
+	if len(excludes) != 0 {
+		excludes = append(excludes, DockerIgnore{ExcludePath: filepath.Join(contextDir, ".dockerignore"), IsExcluded: true})
+	}
+	return excludes
+}
+
+func addHelper(excludes []DockerIgnore, extract bool, dest string, destfi os.FileInfo, hostOwner idtools.IDPair, options AddAndCopyOptions, copyFileWithTar, copyWithTar, untarPath func(src, dest string) error, source ...string) error {
 	for _, src := range source {
 		if strings.HasPrefix(src, "http://") || strings.HasPrefix(src, "https://") {
 			// We assume that source is a file, and we're copying
@@ -167,6 +237,7 @@ func (b *Builder) Add(destination string, extract bool, options AddAndCopyOption
 		if len(glob) == 0 {
 			return errors.Wrapf(syscall.ENOENT, "no files found matching %q", src)
 		}
+	outer:
 		for _, gsrc := range glob {
 			esrc, err := filepath.EvalSymlinks(gsrc)
 			if err != nil {
@@ -185,11 +256,59 @@ func (b *Builder) Add(destination string, extract bool, options AddAndCopyOption
 					return errors.Wrapf(err, "error creating directory %q", dest)
 				}
 				logrus.Debugf("copying %q to %q", esrc+string(os.PathSeparator)+"*", dest+string(os.PathSeparator)+"*")
-				if err = copyWithTar(esrc, dest); err != nil {
-					return errors.Wrapf(err, "error copying %q to %q", esrc, dest)
+				if len(excludes) == 0 {
+					if err = copyWithTar(esrc, dest); err != nil {
+						return errors.Wrapf(err, "error copying %q to %q", esrc, dest)
+					}
+					continue
+				}
+				err := filepath.Walk(esrc, func(path string, info os.FileInfo, err error) error {
+					if err != nil {
+						return err
+					}
+					if info.IsDir() {
+						return nil
+					}
+					for _, exclude := range excludes {
+						match, err := filepath.Match(filepath.Clean(exclude.ExcludePath), filepath.Clean(path))
+						if err != nil {
+							return err
+						}
+						if !match {
+							continue
+						}
+						if exclude.IsExcluded {
+							return nil
+						}
+						break
+					}
+					// combine the filename with the dest directory
+					fpath := strings.TrimPrefix(path, options.ContextDir)
+					if err = copyFileWithTar(path, filepath.Join(dest, fpath)); err != nil {
+						return errors.Wrapf(err, "error copying %q to %q", path, dest)
+					}
+					return nil
+				})
+				if err != nil {
+					return err
 				}
 				continue
 			}
+
+			for _, exclude := range excludes {
+				match, err := filepath.Match(filepath.Clean(exclude.ExcludePath), esrc)
+				if err != nil {
+					return err
+				}
+				if !match {
+					continue
+				}
+				if exclude.IsExcluded {
+					continue outer
+				}
+				break
+			}
+
 			if !extract || !archive.IsArchivePath(esrc) {
 				// This source is a file, and either it's not an
 				// archive, or we don't care whether or not it's an
@@ -214,29 +333,3 @@ func (b *Builder) Add(destination string, extract bool, options AddAndCopyOption
 	}
 	return nil
 }
-
-// user returns the user (and group) information which the destination should belong to.
-func (b *Builder) user(mountPoint string, userspec string) (specs.User, error) {
-	if userspec == "" {
-		userspec = b.User()
-	}
-
-	uid, gid, err := chrootuser.GetUser(mountPoint, userspec)
-	u := specs.User{
-		UID:      uid,
-		GID:      gid,
-		Username: userspec,
-	}
-	if !strings.Contains(userspec, ":") {
-		groups, err2 := chrootuser.GetAdditionalGroupsForUser(mountPoint, uint64(u.UID))
-		if err2 != nil {
-			if errors.Cause(err2) != chrootuser.ErrNoSuchUser && err == nil {
-				err = err2
-			}
-		} else {
-			u.AdditionalGids = groups
-		}
-
-	}
-	return u, err
-}
diff --git a/vendor/github.com/containers/buildah/buildah.go b/vendor/github.com/containers/buildah/buildah.go
index 8f5364632..febc3d0d1 100644
--- a/vendor/github.com/containers/buildah/buildah.go
+++ b/vendor/github.com/containers/buildah/buildah.go
@@ -336,10 +336,10 @@ type BuilderOptions struct {
 	// needs to be pulled and the image name alone can not be resolved to a
 	// reference to a source image.  No separator is implicitly added.
 	Registry string
-	// PullBlobDirectory is the name of a directory in which we'll attempt
+	// BlobDirectory is the name of a directory in which we'll attempt
 	// to store copies of layer blobs that we pull down, if any.  It should
 	// already exist.
-	PullBlobDirectory string
+	BlobDirectory string
 	// Mount signals to NewBuilder() that the container should be mounted
 	// immediately.
 	Mount bool
diff --git a/vendor/github.com/containers/buildah/commit.go b/vendor/github.com/containers/buildah/commit.go
index da28bea61..9ab90196c 100644
--- a/vendor/github.com/containers/buildah/commit.go
+++ b/vendor/github.com/containers/buildah/commit.go
@@ -114,7 +114,7 @@ type PushOptions struct {
 func (b *Builder) Commit(ctx context.Context, dest types.ImageReference, options CommitOptions) (string, reference.Canonical, digest.Digest, error) {
 	var imgID string
 
-	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+	systemContext := getSystemContext(b.store, options.SystemContext, options.SignaturePolicyPath)
 
 	blocked, err := isReferenceBlocked(dest, systemContext)
 	if err != nil {
@@ -152,8 +152,8 @@ func (b *Builder) Commit(ctx context.Context, dest types.ImageReference, options
 	if err != nil {
 		return imgID, nil, "", errors.Wrapf(err, "error computing layer digests and building metadata for container %q", b.ContainerID)
 	}
-	var maybeCachedSrc types.ImageReference = src
-	var maybeCachedDest types.ImageReference = dest
+	var maybeCachedSrc = types.ImageReference(src)
+	var maybeCachedDest = types.ImageReference(dest)
 	if options.BlobDirectory != "" {
 		compress := types.PreserveOriginal
 		if options.Compression != archive.Uncompressed {
@@ -178,7 +178,7 @@ func (b *Builder) Commit(ctx context.Context, dest types.ImageReference, options
 		systemContext.DirForceCompress = true
 	}
 	var manifestBytes []byte
-	if manifestBytes, err = cp.Image(ctx, policyContext, maybeCachedDest, maybeCachedSrc, getCopyOptions(options.ReportWriter, maybeCachedSrc, nil, maybeCachedDest, systemContext, "")); err != nil {
+	if manifestBytes, err = cp.Image(ctx, policyContext, maybeCachedDest, maybeCachedSrc, getCopyOptions(b.store, options.ReportWriter, maybeCachedSrc, nil, maybeCachedDest, systemContext, "")); err != nil {
 		return imgID, nil, "", errors.Wrapf(err, "error copying layers and metadata for container %q", b.ContainerID)
 	}
 	if len(options.AdditionalTags) > 0 {
@@ -230,7 +230,7 @@ func (b *Builder) Commit(ctx context.Context, dest types.ImageReference, options
 
 // Push copies the contents of the image to a new location.
 func Push(ctx context.Context, image string, dest types.ImageReference, options PushOptions) (reference.Canonical, digest.Digest, error) {
-	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+	systemContext := getSystemContext(options.Store, options.SystemContext, options.SignaturePolicyPath)
 
 	if options.Quiet {
 		options.ReportWriter = nil // Turns off logging output
@@ -256,7 +256,7 @@ func Push(ctx context.Context, image string, dest types.ImageReference, options
 	if err != nil {
 		return nil, "", err
 	}
-	var maybeCachedSrc types.ImageReference = src
+	var maybeCachedSrc = types.ImageReference(src)
 	if options.BlobDirectory != "" {
 		compress := types.PreserveOriginal
 		if options.Compression != archive.Uncompressed {
@@ -276,7 +276,7 @@ func Push(ctx context.Context, image string, dest types.ImageReference, options
 		systemContext.DirForceCompress = true
 	}
 	var manifestBytes []byte
-	if manifestBytes, err = cp.Image(ctx, policyContext, dest, maybeCachedSrc, getCopyOptions(options.ReportWriter, maybeCachedSrc, nil, dest, systemContext, options.ManifestType)); err != nil {
+	if manifestBytes, err = cp.Image(ctx, policyContext, dest, maybeCachedSrc, getCopyOptions(options.Store, options.ReportWriter, maybeCachedSrc, nil, dest, systemContext, options.ManifestType)); err != nil {
 		return nil, "", errors.Wrapf(err, "error copying layers and metadata from %q to %q", transports.ImageName(maybeCachedSrc), transports.ImageName(dest))
 	}
 	if options.ReportWriter != nil {
diff --git a/vendor/github.com/containers/buildah/common.go b/vendor/github.com/containers/buildah/common.go
index e369dc407..667a1a484 100644
--- a/vendor/github.com/containers/buildah/common.go
+++ b/vendor/github.com/containers/buildah/common.go
@@ -5,9 +5,10 @@ import (
 	"os"
 	"path/filepath"
 
+	"github.com/containers/buildah/unshare"
 	cp "github.com/containers/image/copy"
 	"github.com/containers/image/types"
-	"github.com/containers/libpod/pkg/rootless"
+	"github.com/containers/storage"
 )
 
 const (
@@ -17,33 +18,16 @@ const (
 	DOCKER = "docker"
 )
 
-// userRegistriesFile is the path to the per user registry configuration file.
-var userRegistriesFile = filepath.Join(os.Getenv("HOME"), ".config/containers/registries.conf")
-
-func getCopyOptions(reportWriter io.Writer, sourceReference types.ImageReference, sourceSystemContext *types.SystemContext, destinationReference types.ImageReference, destinationSystemContext *types.SystemContext, manifestType string) *cp.Options {
-	sourceCtx := &types.SystemContext{}
+func getCopyOptions(store storage.Store, reportWriter io.Writer, sourceReference types.ImageReference, sourceSystemContext *types.SystemContext, destinationReference types.ImageReference, destinationSystemContext *types.SystemContext, manifestType string) *cp.Options {
+	sourceCtx := getSystemContext(store, nil, "")
 	if sourceSystemContext != nil {
 		*sourceCtx = *sourceSystemContext
-	} else {
-		if rootless.IsRootless() {
-			if _, err := os.Stat(userRegistriesFile); err == nil {
-				sourceCtx.SystemRegistriesConfPath = userRegistriesFile
-			}
-
-		}
 	}
 
-	destinationCtx := &types.SystemContext{}
+	destinationCtx := getSystemContext(store, nil, "")
 	if destinationSystemContext != nil {
 		*destinationCtx = *destinationSystemContext
-	} else {
-		if rootless.IsRootless() {
-			if _, err := os.Stat(userRegistriesFile); err == nil {
-				destinationCtx.SystemRegistriesConfPath = userRegistriesFile
-			}
-		}
 	}
-
 	return &cp.Options{
 		ReportWriter:          reportWriter,
 		SourceCtx:             sourceCtx,
@@ -52,7 +36,7 @@ func getCopyOptions(reportWriter io.Writer, sourceReference types.ImageReference
 	}
 }
 
-func getSystemContext(defaults *types.SystemContext, signaturePolicyPath string) *types.SystemContext {
+func getSystemContext(store storage.Store, defaults *types.SystemContext, signaturePolicyPath string) *types.SystemContext {
 	sc := &types.SystemContext{}
 	if defaults != nil {
 		*sc = *defaults
@@ -60,11 +44,16 @@ func getSystemContext(defaults *types.SystemContext, signaturePolicyPath string)
 	if signaturePolicyPath != "" {
 		sc.SignaturePolicyPath = signaturePolicyPath
 	}
-	if sc.SystemRegistriesConfPath == "" && rootless.IsRootless() {
-		if _, err := os.Stat(userRegistriesFile); err == nil {
-			sc.SystemRegistriesConfPath = userRegistriesFile
+	if store != nil {
+		if sc.BlobInfoCacheDir == "" {
+			sc.BlobInfoCacheDir = filepath.Join(store.GraphRoot(), "cache")
+		}
+		if sc.SystemRegistriesConfPath == "" && unshare.IsRootless() {
+			userRegistriesFile := filepath.Join(store.GraphRoot(), "registries.conf")
+			if _, err := os.Stat(userRegistriesFile); err == nil {
+				sc.SystemRegistriesConfPath = userRegistriesFile
+			}
 		}
-
 	}
 	return sc
 }
diff --git a/vendor/github.com/containers/buildah/imagebuildah/build.go b/vendor/github.com/containers/buildah/imagebuildah/build.go
index f50b11f6c..b1e30ca6a 100644
--- a/vendor/github.com/containers/buildah/imagebuildah/build.go
+++ b/vendor/github.com/containers/buildah/imagebuildah/build.go
@@ -11,6 +11,7 @@ import (
 	"os/exec"
 	"path/filepath"
 	"regexp"
+	"sort"
 	"strconv"
 	"strings"
 	"time"
@@ -20,6 +21,7 @@ import (
 	"github.com/containers/buildah/util"
 	cp "github.com/containers/image/copy"
 	"github.com/containers/image/docker/reference"
+	"github.com/containers/image/manifest"
 	is "github.com/containers/image/storage"
 	"github.com/containers/image/transports"
 	"github.com/containers/image/transports/alltransports"
@@ -171,14 +173,12 @@ type BuildOptions struct {
 }
 
 // Executor is a buildah-based implementation of the imagebuilder.Executor
-// interface.
+// interface.  It coordinates the entire build by using one StageExecutors to
+// handle each stage of the build.
 type Executor struct {
-	index                          int
-	name                           string
-	named                          map[string]*Executor
+	stages                         map[string]*StageExecutor
 	store                          storage.Store
 	contextDir                     string
-	builder                        *buildah.Builder
 	pullPolicy                     buildah.PullPolicy
 	registry                       string
 	ignoreUnrecognizedInstructions bool
@@ -196,11 +196,6 @@ type Executor struct {
 	err                            io.Writer
 	signaturePolicyPath            string
 	systemContext                  *types.SystemContext
-	mountPoint                     string
-	preserved                      int
-	volumes                        imagebuilder.VolumeSet
-	volumeCache                    map[string]string
-	volumeCacheInfo                map[string]os.FileInfo
 	reportWriter                   io.Writer
 	isolation                      buildah.Isolation
 	namespaceOptions               []buildah.NamespaceOption
@@ -217,16 +212,46 @@ type Executor struct {
 	onbuild                        []string
 	layers                         bool
 	topLayers                      []string
-	noCache                        bool
+	useCache                       bool
 	removeIntermediateCtrs         bool
 	forceRmIntermediateCtrs        bool
-	containerIDs                   []string          // Stores the IDs of the successful intermediate containers used during layer build
 	imageMap                       map[string]string // Used to map images that we create to handle the AS construct.
-	copyFrom                       string            // Used to keep track of the --from flag from COPY and ADD
 	blobDirectory                  string
+	excludes                       []string
+	unusedArgs                     map[string]struct{}
 }
 
-// builtinAllowedBuildArgs is list of built-in allowed build args
+// StageExecutor bundles up what we need to know when executing one stage of a
+// (possibly multi-stage) build.
+// Each stage may need to produce an image to be used as the base in a later
+// stage (with the last stage's image being the end product of the build), and
+// it may need to leave its working container in place so that the container's
+// root filesystem's contents can be used as the source for a COPY instruction
+// in a later stage.
+// Each stage has its own base image, so it starts with its own configuration
+// and set of volumes.
+// If we're naming the result of the build, only the last stage will apply that
+// name to the image that it produces.
+type StageExecutor struct {
+	executor        *Executor
+	index           int
+	stages          int
+	name            string
+	builder         *buildah.Builder
+	preserved       int
+	volumes         imagebuilder.VolumeSet
+	volumeCache     map[string]string
+	volumeCacheInfo map[string]os.FileInfo
+	mountPoint      string
+	copyFrom        string // Used to keep track of the --from flag from COPY and ADD
+	output          string
+	containerIDs    []string
+}
+
+// builtinAllowedBuildArgs is list of built-in allowed build args.  Normally we
+// complain if we're given values for arguments which have no corresponding ARG
+// instruction in the Dockerfile, since that's usually an indication of a user
+// error, but for these values we make exceptions and ignore them.
 var builtinAllowedBuildArgs = map[string]bool{
 	"HTTP_PROXY":  true,
 	"http_proxy":  true,
@@ -238,63 +263,70 @@ var builtinAllowedBuildArgs = map[string]bool{
 	"no_proxy":    true,
 }
 
-// withName creates a new child executor that will be used whenever a COPY statement uses --from=NAME.
-func (b *Executor) withName(name string, index int, from string) *Executor {
-	if b.named == nil {
-		b.named = make(map[string]*Executor)
-	}
-	copied := *b
-	copied.index = index
-	copied.name = name
-	child := &copied
-	b.named[name] = child
-	b.named[from] = child
+// startStage creates a new stage executor that will be referenced whenever a
+// COPY or ADD statement uses a --from=NAME flag.
+func (b *Executor) startStage(name string, index, stages int, from, output string) *StageExecutor {
+	if b.stages == nil {
+		b.stages = make(map[string]*StageExecutor)
+	}
+	stage := &StageExecutor{
+		executor:        b,
+		index:           index,
+		stages:          stages,
+		name:            name,
+		volumeCache:     make(map[string]string),
+		volumeCacheInfo: make(map[string]os.FileInfo),
+		output:          output,
+	}
+	b.stages[name] = stage
+	b.stages[from] = stage
 	if idx := strconv.Itoa(index); idx != name {
-		b.named[idx] = child
+		b.stages[idx] = stage
 	}
-	return child
+	return stage
 }
 
-// Preserve informs the executor that from this point on, it needs to ensure
-// that only COPY and ADD instructions can modify the contents of this
+// Preserve informs the stage executor that from this point on, it needs to
+// ensure that only COPY and ADD instructions can modify the contents of this
 // directory or anything below it.
-// The Executor handles this by caching the contents of directories which have
-// been marked this way before executing a RUN instruction, invalidating that
-// cache when an ADD or COPY instruction sets any location under the directory
-// as the destination, and using the cache to reset the contents of the
-// directory tree after processing each RUN instruction.
+// The StageExecutor handles this by caching the contents of directories which
+// have been marked this way before executing a RUN instruction, invalidating
+// that cache when an ADD or COPY instruction sets any location under the
+// directory as the destination, and using the cache to reset the contents of
+// the directory tree after processing each RUN instruction.
 // It would be simpler if we could just mark the directory as a read-only bind
 // mount of itself during Run(), but the directory is expected to be remain
-// writeable, even if any changes within it are ultimately discarded.
-func (b *Executor) Preserve(path string) error {
+// writeable while the RUN instruction is being handled, even if any changes
+// made within the directory are ultimately discarded.
+func (s *StageExecutor) Preserve(path string) error {
 	logrus.Debugf("PRESERVE %q", path)
-	if b.volumes.Covers(path) {
+	if s.volumes.Covers(path) {
 		// This path is already a subdirectory of a volume path that
 		// we're already preserving, so there's nothing new to be done
 		// except ensure that it exists.
-		archivedPath := filepath.Join(b.mountPoint, path)
+		archivedPath := filepath.Join(s.mountPoint, path)
 		if err := os.MkdirAll(archivedPath, 0755); err != nil {
 			return errors.Wrapf(err, "error ensuring volume path %q exists", archivedPath)
 		}
-		if err := b.volumeCacheInvalidate(path); err != nil {
+		if err := s.volumeCacheInvalidate(path); err != nil {
 			return errors.Wrapf(err, "error ensuring volume path %q is preserved", archivedPath)
 		}
 		return nil
 	}
 	// Figure out where the cache for this volume would be stored.
-	b.preserved++
-	cacheDir, err := b.store.ContainerDirectory(b.builder.ContainerID)
+	s.preserved++
+	cacheDir, err := s.executor.store.ContainerDirectory(s.builder.ContainerID)
 	if err != nil {
 		return errors.Errorf("unable to locate temporary directory for container")
 	}
-	cacheFile := filepath.Join(cacheDir, fmt.Sprintf("volume%d.tar", b.preserved))
+	cacheFile := filepath.Join(cacheDir, fmt.Sprintf("volume%d.tar", s.preserved))
 	// Save info about the top level of the location that we'll be archiving.
-	archivedPath := filepath.Join(b.mountPoint, path)
+	archivedPath := filepath.Join(s.mountPoint, path)
 
 	// Try and resolve the symlink (if one exists)
 	// Set archivedPath and path based on whether a symlink is found or not
-	if symLink, err := resolveSymlink(b.mountPoint, path); err == nil {
-		archivedPath = filepath.Join(b.mountPoint, symLink)
+	if symLink, err := resolveSymlink(s.mountPoint, path); err == nil {
+		archivedPath = filepath.Join(s.mountPoint, symLink)
 		path = symLink
 	} else {
 		return errors.Wrapf(err, "error reading symbolic link to %q", path)
@@ -311,20 +343,20 @@ func (b *Executor) Preserve(path string) error {
 		logrus.Debugf("error reading info about %q: %v", archivedPath, err)
 		return errors.Wrapf(err, "error reading info about volume path %q", archivedPath)
 	}
-	b.volumeCacheInfo[path] = st
-	if !b.volumes.Add(path) {
+	s.volumeCacheInfo[path] = st
+	if !s.volumes.Add(path) {
 		// This path is not a subdirectory of a volume path that we're
 		// already preserving, so adding it to the list should work.
 		return errors.Errorf("error adding %q to the volume cache", path)
 	}
-	b.volumeCache[path] = cacheFile
+	s.volumeCache[path] = cacheFile
 	// Now prune cache files for volumes that are now supplanted by this one.
 	removed := []string{}
-	for cachedPath := range b.volumeCache {
+	for cachedPath := range s.volumeCache {
 		// Walk our list of cached volumes, and check that they're
 		// still in the list of locations that we need to cache.
 		found := false
-		for _, volume := range b.volumes {
+		for _, volume := range s.volumes {
 			if volume == cachedPath {
 				// We need to keep this volume's cache.
 				found = true
@@ -339,47 +371,47 @@ func (b *Executor) Preserve(path string) error {
 	}
 	// Actually remove the caches that we decided to remove.
 	for _, cachedPath := range removed {
-		archivedPath := filepath.Join(b.mountPoint, cachedPath)
-		logrus.Debugf("no longer need cache of %q in %q", archivedPath, b.volumeCache[cachedPath])
-		if err := os.Remove(b.volumeCache[cachedPath]); err != nil {
+		archivedPath := filepath.Join(s.mountPoint, cachedPath)
+		logrus.Debugf("no longer need cache of %q in %q", archivedPath, s.volumeCache[cachedPath])
+		if err := os.Remove(s.volumeCache[cachedPath]); err != nil {
 			if os.IsNotExist(err) {
 				continue
 			}
-			return errors.Wrapf(err, "error removing %q", b.volumeCache[cachedPath])
+			return errors.Wrapf(err, "error removing %q", s.volumeCache[cachedPath])
 		}
-		delete(b.volumeCache, cachedPath)
+		delete(s.volumeCache, cachedPath)
 	}
 	return nil
 }
 
 // Remove any volume cache item which will need to be re-saved because we're
 // writing to part of it.
-func (b *Executor) volumeCacheInvalidate(path string) error {
+func (s *StageExecutor) volumeCacheInvalidate(path string) error {
 	invalidated := []string{}
-	for cachedPath := range b.volumeCache {
+	for cachedPath := range s.volumeCache {
 		if strings.HasPrefix(path, cachedPath+string(os.PathSeparator)) {
 			invalidated = append(invalidated, cachedPath)
 		}
 	}
 	for _, cachedPath := range invalidated {
-		if err := os.Remove(b.volumeCache[cachedPath]); err != nil {
+		if err := os.Remove(s.volumeCache[cachedPath]); err != nil {
 			if os.IsNotExist(err) {
 				continue
 			}
-			return errors.Wrapf(err, "error removing volume cache %q", b.volumeCache[cachedPath])
+			return errors.Wrapf(err, "error removing volume cache %q", s.volumeCache[cachedPath])
 		}
-		archivedPath := filepath.Join(b.mountPoint, cachedPath)
-		logrus.Debugf("invalidated volume cache for %q from %q", archivedPath, b.volumeCache[cachedPath])
-		delete(b.volumeCache, cachedPath)
+		archivedPath := filepath.Join(s.mountPoint, cachedPath)
+		logrus.Debugf("invalidated volume cache for %q from %q", archivedPath, s.volumeCache[cachedPath])
+		delete(s.volumeCache, cachedPath)
 	}
 	return nil
 }
 
 // Save the contents of each of the executor's list of volumes for which we
 // don't already have a cache file.
-func (b *Executor) volumeCacheSave() error {
-	for cachedPath, cacheFile := range b.volumeCache {
-		archivedPath := filepath.Join(b.mountPoint, cachedPath)
+func (s *StageExecutor) volumeCacheSave() error {
+	for cachedPath, cacheFile := range s.volumeCache {
+		archivedPath := filepath.Join(s.mountPoint, cachedPath)
 		_, err := os.Stat(cacheFile)
 		if err == nil {
 			logrus.Debugf("contents of volume %q are already cached in %q", archivedPath, cacheFile)
@@ -411,9 +443,9 @@ func (b *Executor) volumeCacheSave() error {
 }
 
 // Restore the contents of each of the executor's list of volumes.
-func (b *Executor) volumeCacheRestore() error {
-	for cachedPath, cacheFile := range b.volumeCache {
-		archivedPath := filepath.Join(b.mountPoint, cachedPath)
+func (s *StageExecutor) volumeCacheRestore() error {
+	for cachedPath, cacheFile := range s.volumeCache {
+		archivedPath := filepath.Join(s.mountPoint, cachedPath)
 		logrus.Debugf("restoring contents of volume %q from %q", archivedPath, cacheFile)
 		cache, err := os.Open(cacheFile)
 		if err != nil {
@@ -430,7 +462,7 @@ func (b *Executor) volumeCacheRestore() error {
 		if err != nil {
 			return errors.Wrapf(err, "error extracting archive at %q", archivedPath)
 		}
-		if st, ok := b.volumeCacheInfo[cachedPath]; ok {
+		if st, ok := s.volumeCacheInfo[cachedPath]; ok {
 			if err := os.Chmod(archivedPath, st.Mode()); err != nil {
 				return errors.Wrapf(err, "error restoring permissions on %q", archivedPath)
 			}
@@ -447,10 +479,14 @@ func (b *Executor) volumeCacheRestore() error {
 
 // Copy copies data into the working tree.  The "Download" field is how
 // imagebuilder tells us the instruction was "ADD" and not "COPY".
-func (b *Executor) Copy(excludes []string, copies ...imagebuilder.Copy) error {
+func (s *StageExecutor) Copy(excludes []string, copies ...imagebuilder.Copy) error {
 	for _, copy := range copies {
-		logrus.Debugf("COPY %#v, %#v", excludes, copy)
-		if err := b.volumeCacheInvalidate(copy.Dest); err != nil {
+		if copy.Download {
+			logrus.Debugf("ADD %#v, %#v", excludes, copy)
+		} else {
+			logrus.Debugf("COPY %#v, %#v", excludes, copy)
+		}
+		if err := s.volumeCacheInvalidate(copy.Dest); err != nil {
 			return err
 		}
 		sources := []string{}
@@ -458,21 +494,23 @@ func (b *Executor) Copy(excludes []string, copies ...imagebuilder.Copy) error {
 			if strings.HasPrefix(src, "http://") || strings.HasPrefix(src, "https://") {
 				sources = append(sources, src)
 			} else if len(copy.From) > 0 {
-				if other, ok := b.named[copy.From]; ok && other.index < b.index {
+				if other, ok := s.executor.stages[copy.From]; ok && other.index < s.index {
 					sources = append(sources, filepath.Join(other.mountPoint, src))
 				} else {
 					return errors.Errorf("the stage %q has not been built", copy.From)
 				}
 			} else {
-				sources = append(sources, filepath.Join(b.contextDir, src))
+				sources = append(sources, filepath.Join(s.executor.contextDir, src))
 			}
 		}
 
 		options := buildah.AddAndCopyOptions{
-			Chown: copy.Chown,
+			Chown:      copy.Chown,
+			ContextDir: s.executor.contextDir,
+			Excludes:   s.executor.excludes,
 		}
 
-		if err := b.builder.Add(copy.Dest, copy.Download, options, sources...); err != nil {
+		if err := s.builder.Add(copy.Dest, copy.Download, options, sources...); err != nil {
 			return err
 		}
 	}
@@ -493,14 +531,14 @@ func convertMounts(mounts []Mount) []specs.Mount {
 	return specmounts
 }
 
-// Run executes a RUN instruction using the working container as a root
-// directory.
-func (b *Executor) Run(run imagebuilder.Run, config docker.Config) error {
+// Run executes a RUN instruction using the stage's current working container
+// as a root directory.
+func (s *StageExecutor) Run(run imagebuilder.Run, config docker.Config) error {
 	logrus.Debugf("RUN %#v, %#v", run, config)
-	if b.builder == nil {
+	if s.builder == nil {
 		return errors.Errorf("no build container available")
 	}
-	stdin := b.in
+	stdin := s.executor.in
 	if stdin == nil {
 		devNull, err := os.Open(os.DevNull)
 		if err != nil {
@@ -511,20 +549,20 @@ func (b *Executor) Run(run imagebuilder.Run, config docker.Config) error {
 	}
 	options := buildah.RunOptions{
 		Hostname:         config.Hostname,
-		Runtime:          b.runtime,
-		Args:             b.runtimeArgs,
+		Runtime:          s.executor.runtime,
+		Args:             s.executor.runtimeArgs,
 		NoPivot:          os.Getenv("BUILDAH_NOPIVOT") != "",
-		Mounts:           convertMounts(b.transientMounts),
+		Mounts:           convertMounts(s.executor.transientMounts),
 		Env:              config.Env,
 		User:             config.User,
 		WorkingDir:       config.WorkingDir,
 		Entrypoint:       config.Entrypoint,
 		Cmd:              config.Cmd,
 		Stdin:            stdin,
-		Stdout:           b.out,
-		Stderr:           b.err,
-		Quiet:            b.quiet,
-		NamespaceOptions: b.namespaceOptions,
+		Stdout:           s.executor.out,
+		Stderr:           s.executor.err,
+		Quiet:            s.executor.quiet,
+		NamespaceOptions: s.executor.namespaceOptions,
 	}
 	if config.NetworkDisabled {
 		options.ConfigureNetwork = buildah.NetworkDisabled
@@ -536,11 +574,11 @@ func (b *Executor) Run(run imagebuilder.Run, config docker.Config) error {
 	if run.Shell {
 		args = append([]string{"/bin/sh", "-c"}, args...)
 	}
-	if err := b.volumeCacheSave(); err != nil {
+	if err := s.volumeCacheSave(); err != nil {
 		return err
 	}
-	err := b.builder.Run(args, options)
-	if err2 := b.volumeCacheRestore(); err2 != nil {
+	err := s.builder.Run(args, options)
+	if err2 := s.volumeCacheRestore(); err2 != nil {
 		if err == nil {
 			return err2
 		}
@@ -550,10 +588,10 @@ func (b *Executor) Run(run imagebuilder.Run, config docker.Config) error {
 
 // UnrecognizedInstruction is called when we encounter an instruction that the
 // imagebuilder parser didn't understand.
-func (b *Executor) UnrecognizedInstruction(step *imagebuilder.Step) error {
+func (s *StageExecutor) UnrecognizedInstruction(step *imagebuilder.Step) error {
 	errStr := fmt.Sprintf("Build error: Unknown instruction: %q ", step.Command)
 	err := fmt.Sprintf(errStr+"%#v", step)
-	if b.ignoreUnrecognizedInstructions {
+	if s.executor.ignoreUnrecognizedInstructions {
 		logrus.Debugf(err)
 		return nil
 	}
@@ -572,9 +610,15 @@ func (b *Executor) UnrecognizedInstruction(step *imagebuilder.Step) error {
 
 // NewExecutor creates a new instance of the imagebuilder.Executor interface.
 func NewExecutor(store storage.Store, options BuildOptions) (*Executor, error) {
+	excludes, err := imagebuilder.ParseDockerignore(options.ContextDirectory)
+	if err != nil {
+		return nil, err
+	}
+
 	exec := Executor{
 		store:                          store,
 		contextDir:                     options.ContextDirectory,
+		excludes:                       excludes,
 		pullPolicy:                     options.PullPolicy,
 		registry:                       options.Registry,
 		ignoreUnrecognizedInstructions: options.IgnoreUnrecognizedInstructions,
@@ -588,8 +632,6 @@ func NewExecutor(store storage.Store, options BuildOptions) (*Executor, error) {
 		additionalTags:                 options.AdditionalTags,
 		signaturePolicyPath:            options.SignaturePolicyPath,
 		systemContext:                  options.SystemContext,
-		volumeCache:                    make(map[string]string),
-		volumeCacheInfo:                make(map[string]os.FileInfo),
 		log:                            options.Log,
 		in:                             options.In,
 		out:                            options.Out,
@@ -608,10 +650,12 @@ func NewExecutor(store storage.Store, options BuildOptions) (*Executor, error) {
 		labels:                         append([]string{}, options.Labels...),
 		annotations:                    append([]string{}, options.Annotations...),
 		layers:                         options.Layers,
-		noCache:                        options.NoCache,
+		useCache:                       !options.NoCache,
 		removeIntermediateCtrs:         options.RemoveIntermediateCtrs,
 		forceRmIntermediateCtrs:        options.ForceRmIntermediateCtrs,
+		imageMap:                       make(map[string]string),
 		blobDirectory:                  options.BlobDirectory,
+		unusedArgs:                     make(map[string]struct{}),
 	}
 	if exec.err == nil {
 		exec.err = os.Stderr
@@ -628,12 +672,18 @@ func NewExecutor(store storage.Store, options BuildOptions) (*Executor, error) {
 			fmt.Fprintf(exec.err, prefix+format+suffix, args...)
 		}
 	}
+	for arg := range options.Args {
+		if _, isBuiltIn := builtinAllowedBuildArgs[arg]; !isBuiltIn {
+			exec.unusedArgs[arg] = struct{}{}
+		}
+	}
 	return &exec, nil
 }
 
-// Prepare creates a working container based on specified image, or if one
-// isn't specified, the first FROM instruction we can find in the parsed tree.
-func (b *Executor) Prepare(ctx context.Context, stage imagebuilder.Stage, from string) error {
+// Prepare creates a working container based on the specified image, or if one
+// isn't specified, the first argument passed to the first FROM instruction we
+// can find in the stage's parsed tree.
+func (s *StageExecutor) Prepare(ctx context.Context, stage imagebuilder.Stage, from string) error {
 	ib := stage.Builder
 	node := stage.Node
 
@@ -646,7 +696,8 @@ func (b *Executor) Prepare(ctx context.Context, stage imagebuilder.Stage, from s
 		from = base
 	}
 	displayFrom := from
-	// stage.Name will be a string of integers for all stages without an "AS" clause
+
+	// stage.Name will be a numeric string for all stages without an "AS" clause
 	asImageName := stage.Name
 	if asImageName != "" {
 		if _, err := strconv.Atoi(asImageName); err != nil {
@@ -657,38 +708,36 @@ func (b *Executor) Prepare(ctx context.Context, stage imagebuilder.Stage, from s
 	}
 
 	logrus.Debugf("FROM %#v", displayFrom)
-	if !b.quiet {
-		b.log("FROM %s", displayFrom)
+	if !s.executor.quiet {
+		s.executor.log("FROM %s", displayFrom)
 	}
 
 	builderOptions := buildah.BuilderOptions{
 		Args:                  ib.Args,
 		FromImage:             from,
-		PullPolicy:            b.pullPolicy,
-		Registry:              b.registry,
-		PullBlobDirectory:     b.blobDirectory,
-		SignaturePolicyPath:   b.signaturePolicyPath,
-		ReportWriter:          b.reportWriter,
-		SystemContext:         b.systemContext,
-		Isolation:             b.isolation,
-		NamespaceOptions:      b.namespaceOptions,
-		ConfigureNetwork:      b.configureNetwork,
-		CNIPluginPath:         b.cniPluginPath,
-		CNIConfigDir:          b.cniConfigDir,
-		IDMappingOptions:      b.idmappingOptions,
-		CommonBuildOpts:       b.commonBuildOptions,
-		DefaultMountsFilePath: b.defaultMountsFilePath,
-		Format:                b.outputFormat,
-	}
-
-	var builder *buildah.Builder
-	var err error
-	// Check and see if the image was declared previously with
-	// an AS clause in the Dockerfile.
-	if asImageFound, ok := b.imageMap[from]; ok {
+		PullPolicy:            s.executor.pullPolicy,
+		Registry:              s.executor.registry,
+		BlobDirectory:         s.executor.blobDirectory,
+		SignaturePolicyPath:   s.executor.signaturePolicyPath,
+		ReportWriter:          s.executor.reportWriter,
+		SystemContext:         s.executor.systemContext,
+		Isolation:             s.executor.isolation,
+		NamespaceOptions:      s.executor.namespaceOptions,
+		ConfigureNetwork:      s.executor.configureNetwork,
+		CNIPluginPath:         s.executor.cniPluginPath,
+		CNIConfigDir:          s.executor.cniConfigDir,
+		IDMappingOptions:      s.executor.idmappingOptions,
+		CommonBuildOpts:       s.executor.commonBuildOptions,
+		DefaultMountsFilePath: s.executor.defaultMountsFilePath,
+		Format:                s.executor.outputFormat,
+	}
+
+	// Check and see if the image is a pseudonym for the end result of a
+	// previous stage, named by an AS clause in the Dockerfile.
+	if asImageFound, ok := s.executor.imageMap[from]; ok {
 		builderOptions.FromImage = asImageFound
 	}
-	builder, err = buildah.NewBuilder(ctx, b.store, builderOptions)
+	builder, err := buildah.NewBuilder(ctx, s.executor.store, builderOptions)
 	if err != nil {
 		return errors.Wrapf(err, "error creating build container")
 	}
@@ -749,45 +798,43 @@ func (b *Executor) Prepare(ctx context.Context, stage imagebuilder.Stage, from s
 		}
 		return errors.Wrapf(err, "error mounting new container")
 	}
-	b.mountPoint = mountPoint
-	b.builder = builder
+	s.mountPoint = mountPoint
+	s.builder = builder
 	// Add the top layer of this image to b.topLayers so we can keep track of them
 	// when building with cached images.
-	b.topLayers = append(b.topLayers, builder.TopLayer)
+	s.executor.topLayers = append(s.executor.topLayers, builder.TopLayer)
 	logrus.Debugln("Container ID:", builder.ContainerID)
 	return nil
 }
 
-// Delete deletes the working container, if we have one.  The Executor object
-// should not be used to build another image, as the name of the output image
-// isn't resettable.
-func (b *Executor) Delete() (err error) {
-	if b.builder != nil {
-		err = b.builder.Delete()
-		b.builder = nil
+// Delete deletes the stage's working container, if we have one.
+func (s *StageExecutor) Delete() (err error) {
+	if s.builder != nil {
+		err = s.builder.Delete()
+		s.builder = nil
 	}
 	return err
 }
 
 // resolveNameToImageRef creates a types.ImageReference from b.output
-func (b *Executor) resolveNameToImageRef() (types.ImageReference, error) {
+func (b *Executor) resolveNameToImageRef(output string) (types.ImageReference, error) {
 	var (
 		imageRef types.ImageReference
 		err      error
 	)
-	if b.output != "" {
-		imageRef, err = alltransports.ParseImageName(b.output)
+	if output != "" {
+		imageRef, err = alltransports.ParseImageName(output)
 		if err != nil {
-			candidates, _, _, err := util.ResolveName(b.output, "", b.systemContext, b.store)
+			candidates, _, _, err := util.ResolveName(output, "", b.systemContext, b.store)
 			if err != nil {
-				return nil, errors.Wrapf(err, "error parsing target image name %q", b.output)
+				return nil, errors.Wrapf(err, "error parsing target image name %q", output)
 			}
 			if len(candidates) == 0 {
-				return nil, errors.Errorf("error parsing target image name %q", b.output)
+				return nil, errors.Errorf("error parsing target image name %q", output)
 			}
 			imageRef2, err2 := is.Transport.ParseStoreReference(b.store, candidates[0])
 			if err2 != nil {
-				return nil, errors.Wrapf(err, "error parsing target image name %q", b.output)
+				return nil, errors.Wrapf(err, "error parsing target image name %q", output)
 			}
 			return imageRef2, nil
 		}
@@ -800,175 +847,205 @@ func (b *Executor) resolveNameToImageRef() (types.ImageReference, error) {
 	return imageRef, nil
 }
 
-// Execute runs each of the steps in the parsed tree, in turn.
-func (b *Executor) Execute(ctx context.Context, stage imagebuilder.Stage) error {
+// Execute runs each of the steps in the stage's parsed tree, in turn.
+func (s *StageExecutor) Execute(ctx context.Context, stage imagebuilder.Stage) (imgID string, ref reference.Canonical, err error) {
 	ib := stage.Builder
 	node := stage.Node
 	checkForLayers := true
 	children := node.Children
-	commitName := b.output
-	b.containerIDs = nil
+	commitName := s.output
 
-	var leftoverArgs []string
-	for arg := range b.builder.Args {
-		if !builtinAllowedBuildArgs[arg] {
-			leftoverArgs = append(leftoverArgs, arg)
-		}
-	}
 	for i, node := range node.Children {
+		// Resolve any arguments in this instruction so that we don't have to.
 		step := ib.Step()
 		if err := step.Resolve(node); err != nil {
-			return errors.Wrapf(err, "error resolving step %+v", *node)
+			return "", nil, errors.Wrapf(err, "error resolving step %+v", *node)
 		}
 		logrus.Debugf("Parsed Step: %+v", *step)
+		if !s.executor.quiet {
+			s.executor.log("%s", step.Original)
+		}
+
+		// If this instruction declares an argument, remove it from the
+		// set of arguments that we were passed but which we haven't
+		// seen used by the Dockerfile.
 		if step.Command == "arg" {
-			for index, arg := range leftoverArgs {
-				for _, Arg := range step.Args {
-					list := strings.SplitN(Arg, "=", 2)
-					if arg == list[0] {
-						leftoverArgs = append(leftoverArgs[:index], leftoverArgs[index+1:]...)
-					}
+			for _, Arg := range step.Args {
+				list := strings.SplitN(Arg, "=", 2)
+				if _, stillUnused := s.executor.unusedArgs[list[0]]; stillUnused {
+					delete(s.executor.unusedArgs, list[0])
 				}
 			}
 		}
-		if !b.quiet {
-			b.log("%s", step.Original)
+
+		// Check if there's a --from if the step command is COPY or
+		// ADD.  Set copyFrom to point to either the context directory
+		// or the root of the container from the specified stage.
+		s.copyFrom = s.executor.contextDir
+		for _, n := range step.Flags {
+			if strings.Contains(n, "--from") && (step.Command == "copy" || step.Command == "add") {
+				arr := strings.Split(n, "=")
+				stage, ok := s.executor.stages[arr[1]]
+				if !ok {
+					return "", nil, errors.Errorf("%s --from=%s: no stage found with that name", step.Command, arr[1])
+				}
+				s.copyFrom = stage.mountPoint
+				break
+			}
 		}
-		requiresStart := false
-		if i < len(node.Children)-1 {
-			requiresStart = ib.RequiresStart(&parser.Node{Children: node.Children[i+1:]})
+
+		// Determine if there are any RUN instructions to be run after
+		// this step.  If not, we won't have to bother preserving the
+		// contents of any volumes declared between now and when we
+		// finish.
+		noRunsRemaining := false
+		if i < len(children)-1 {
+			noRunsRemaining = !ib.RequiresStart(&parser.Node{Children: children[i+1:]})
 		}
 
-		if !b.layers && !b.noCache {
-			err := ib.Run(step, b, requiresStart)
+		// If we're doing a single-layer build and not looking to take
+		// shortcuts using the cache, make a note of the instruction,
+		// process it, and then move on to the next instruction.
+		if !s.executor.layers && s.executor.useCache {
+			err := ib.Run(step, s, noRunsRemaining)
 			if err != nil {
-				return errors.Wrapf(err, "error building at step %+v", *step)
+				return "", nil, errors.Wrapf(err, "error building at step %+v", *step)
 			}
 			continue
 		}
 
 		if i < len(children)-1 {
-			b.output = ""
+			commitName = ""
 		} else {
-			b.output = commitName
+			commitName = s.output
 		}
 
+		// TODO: this makes the tests happy, but it shouldn't be
+		// necessary unless this is the final stage.
+		commitName = s.executor.output
+
 		var (
 			cacheID string
 			err     error
-			imgID   string
 		)
 
-		b.copyFrom = ""
-		// Check if --from exists in the step command of COPY or ADD
-		// If it exists, set b.copyfrom to that value
-		for _, n := range step.Flags {
-			if strings.Contains(n, "--from") && (step.Command == "copy" || step.Command == "add") {
-				arr := strings.Split(n, "=")
-				b.copyFrom = b.named[arr[1]].mountPoint
-				break
-			}
-		}
-
-		// checkForLayers will be true if b.layers is true and a cached intermediate image is found.
-		// checkForLayers is set to false when either there is no cached image or a break occurs where
-		// the instructions in the Dockerfile change from a previous build.
-		// Don't check for cache if b.noCache is set to true.
-		if checkForLayers && !b.noCache {
-			cacheID, err = b.layerExists(ctx, node, children[:i])
+		// If we're using the cache, and we've managed to stick with
+		// cached images so far, look for one that matches what we
+		// expect to produce for this instruction.
+		if checkForLayers && s.executor.useCache {
+			cacheID, err = s.layerExists(ctx, node, children[:i])
 			if err != nil {
-				return errors.Wrap(err, "error checking if cached image exists from a previous build")
+				return "", nil, errors.Wrap(err, "error checking if cached image exists from a previous build")
 			}
 		}
-
 		if cacheID != "" {
-			fmt.Fprintf(b.out, "--> Using cache %s\n", cacheID)
+			fmt.Fprintf(s.executor.out, "--> Using cache %s\n", cacheID)
 		}
 
-		// If a cache is found for the last step, that means nothing in the
-		// Dockerfile changed. Just create a copy of the existing image and
-		// save it with the new name passed in by the user.
+		// If a cache is found and we're on the last step, that means
+		// nothing in this phase changed.  Just create a copy of the
+		// existing image and save it with the name that we were going
+		// to assign to the one that we were building, and make sure
+		// that the builder's root fs matches it.
 		if cacheID != "" && i == len(children)-1 {
-			if err := b.copyExistingImage(ctx, cacheID); err != nil {
-				return err
+			if imgID, ref, err = s.copyExistingImage(ctx, cacheID, commitName); err != nil {
+				return "", nil, err
 			}
-			b.containerIDs = append(b.containerIDs, b.builder.ContainerID)
 			break
 		}
 
+		// If we didn't find a cached step that we could just reuse,
+		// process the instruction and commit the layer.
 		if cacheID == "" || !checkForLayers {
 			checkForLayers = false
-			err := ib.Run(step, b, requiresStart)
+			err := ib.Run(step, s, noRunsRemaining)
 			if err != nil {
-				return errors.Wrapf(err, "error building at step %+v", *step)
+				return "", nil, errors.Wrapf(err, "error building at step %+v", *step)
 			}
 		}
 
 		// Commit if no cache is found
 		if cacheID == "" {
-			imgID, _, err = b.Commit(ctx, ib, getCreatedBy(node))
+			imgID, ref, err = s.Commit(ctx, ib, getCreatedBy(node), commitName)
 			if err != nil {
-				return errors.Wrapf(err, "error committing container for step %+v", *step)
+				return "", nil, errors.Wrapf(err, "error committing container for step %+v", *step)
 			}
 			if i == len(children)-1 {
-				b.log("COMMIT %s", b.output)
+				s.executor.log("COMMIT %s", commitName)
 			}
 		} else {
-			// Cache is found, assign imgID the id of the cached image so
-			// it is used to create the container for the next step.
+			// If we did find a cache, reuse the cached image's ID
+			// as the basis for the container for the next step.
 			imgID = cacheID
 		}
-		// Add container ID of successful intermediate container to b.containerIDs
-		b.containerIDs = append(b.containerIDs, b.builder.ContainerID)
+
 		// Prepare for the next step with imgID as the new base image.
-		if i != len(children)-1 {
-			if err := b.Prepare(ctx, stage, imgID); err != nil {
-				return errors.Wrap(err, "error preparing container for next step")
+		if i < len(children)-1 {
+			s.containerIDs = append(s.containerIDs, s.builder.ContainerID)
+			if err := s.Prepare(ctx, stage, imgID); err != nil {
+				return "", nil, errors.Wrap(err, "error preparing container for next step")
 			}
 		}
 	}
-	if len(leftoverArgs) > 0 {
-		fmt.Fprintf(b.out, "[Warning] One or more build-args %v were not consumed\n", leftoverArgs)
+
+	if s.executor.layers { // print out the final imageID if we're using layers flag
+		fmt.Fprintf(s.executor.out, "--> %s\n", imgID)
 	}
-	return nil
+
+	return imgID, ref, nil
 }
 
-// copyExistingImage creates a copy of an image already in store
-func (b *Executor) copyExistingImage(ctx context.Context, cacheID string) error {
+// copyExistingImage creates a copy of an image already in the store
+func (s *StageExecutor) copyExistingImage(ctx context.Context, cacheID, output string) (string, reference.Canonical, error) {
 	// Get the destination Image Reference
-	dest, err := b.resolveNameToImageRef()
+	dest, err := s.executor.resolveNameToImageRef(output)
 	if err != nil {
-		return err
+		return "", nil, err
 	}
 
-	policyContext, err := util.GetPolicyContext(b.systemContext)
+	policyContext, err := util.GetPolicyContext(s.executor.systemContext)
 	if err != nil {
-		return err
+		return "", nil, err
 	}
 	defer policyContext.Destroy()
 
 	// Look up the source image, expecting it to be in local storage
-	src, err := is.Transport.ParseStoreReference(b.store, cacheID)
+	src, err := is.Transport.ParseStoreReference(s.executor.store, cacheID)
 	if err != nil {
-		return errors.Wrapf(err, "error getting source imageReference for %q", cacheID)
+		return "", nil, errors.Wrapf(err, "error getting source imageReference for %q", cacheID)
 	}
-	if _, err := cp.Image(ctx, policyContext, dest, src, nil); err != nil {
-		return errors.Wrapf(err, "error copying image %q", cacheID)
+	manifestBytes, err := cp.Image(ctx, policyContext, dest, src, nil)
+	if err != nil {
+		return "", nil, errors.Wrapf(err, "error copying image %q", cacheID)
 	}
-	b.log("COMMIT %s", b.output)
-	return nil
+	manifestDigest, err := manifest.Digest(manifestBytes)
+	if err != nil {
+		return "", nil, errors.Wrapf(err, "error computing digest of manifest for image %q", cacheID)
+	}
+	img, err := is.Transport.GetStoreImage(s.executor.store, dest)
+	if err != nil {
+		return "", nil, errors.Wrapf(err, "error locating new copy of image %q (i.e., %q)", cacheID, transports.ImageName(dest))
+	}
+	s.executor.log("COMMIT %s", s.output)
+	var ref reference.Canonical
+	if dref := dest.DockerReference(); dref != nil {
+		if ref, err = reference.WithDigest(dref, manifestDigest); err != nil {
+			return "", nil, errors.Wrapf(err, "error computing canonical reference for new image %q (i.e., %q)", cacheID, transports.ImageName(dest))
+		}
+	}
+	return img.ID, ref, nil
 }
 
 // layerExists returns true if an intermediate image of currNode exists in the image store from a previous build.
 // It verifies this by checking the parent of the top layer of the image and the history.
-func (b *Executor) layerExists(ctx context.Context, currNode *parser.Node, children []*parser.Node) (string, error) {
+func (s *StageExecutor) layerExists(ctx context.Context, currNode *parser.Node, children []*parser.Node) (string, error) {
 	// Get the list of images available in the image store
-	images, err := b.store.Images()
+	images, err := s.executor.store.Images()
 	if err != nil {
 		return "", errors.Wrap(err, "error getting image list from store")
 	}
 	for _, image := range images {
-		layer, err := b.store.Layer(image.TopLayer)
+		layer, err := s.executor.store.Layer(image.TopLayer)
 		if err != nil {
 			return "", errors.Wrapf(err, "error getting top layer info")
 		}
@@ -976,8 +1053,8 @@ func (b *Executor) layerExists(ctx context.Context, currNode *parser.Node, child
 		// it means that this image is potentially a cached intermediate image from a previous
 		// build. Next we double check that the history of this image is equivalent to the previous
 		// lines in the Dockerfile up till the point we are at in the build.
-		if layer.Parent == b.topLayers[len(b.topLayers)-1] {
-			history, err := b.getImageHistory(ctx, image.ID)
+		if layer.Parent == s.executor.topLayers[len(s.executor.topLayers)-1] {
+			history, err := s.executor.getImageHistory(ctx, image.ID)
 			if err != nil {
 				return "", errors.Wrapf(err, "error getting history of %q", image.ID)
 			}
@@ -985,7 +1062,7 @@ func (b *Executor) layerExists(ctx context.Context, currNode *parser.Node, child
 			if historyMatches(append(children, currNode), history) {
 				// This checks if the files copied during build have been changed if the node is
 				// a COPY or ADD command.
-				filesMatch, err := b.copiedFilesMatch(currNode, history[len(history)-1].Created)
+				filesMatch, err := s.copiedFilesMatch(currNode, history[len(history)-1].Created)
 				if err != nil {
 					return "", errors.Wrapf(err, "error checking if copied files match")
 				}
@@ -1045,24 +1122,16 @@ func historyMatches(children []*parser.Node, history []v1.History) bool {
 // getFilesToCopy goes through node to get all the src files that are copied, added or downloaded.
 // It is possible for the Dockerfile to have src as hom*, which means all files that have hom as a prefix.
 // Another format is hom?.txt, which means all files that have that name format with the ? replaced by another character.
-func (b *Executor) getFilesToCopy(node *parser.Node) ([]string, error) {
+func (s *StageExecutor) getFilesToCopy(node *parser.Node) ([]string, error) {
 	currNode := node.Next
 	var src []string
 	for currNode.Next != nil {
-		if currNode.Next == nil {
-			break
-		}
 		if strings.HasPrefix(currNode.Value, "http://") || strings.HasPrefix(currNode.Value, "https://") {
 			src = append(src, currNode.Value)
 			currNode = currNode.Next
 			continue
 		}
-		if b.copyFrom != "" {
-			src = append(src, filepath.Join(b.copyFrom, currNode.Value))
-			currNode = currNode.Next
-			continue
-		}
-		matches, err := filepath.Glob(filepath.Join(b.contextDir, currNode.Value))
+		matches, err := filepath.Glob(filepath.Join(s.copyFrom, currNode.Value))
 		if err != nil {
 			return nil, errors.Wrapf(err, "error finding match for pattern %q", currNode.Value)
 		}
@@ -1076,12 +1145,12 @@ func (b *Executor) getFilesToCopy(node *parser.Node) ([]string, error) {
 // If it is either of those two it checks the timestamps on all the files copied/added
 // by the dockerfile. If the host version has a time stamp greater than the time stamp
 // of the build, the build will not use the cached version and will rebuild.
-func (b *Executor) copiedFilesMatch(node *parser.Node, historyTime *time.Time) (bool, error) {
+func (s *StageExecutor) copiedFilesMatch(node *parser.Node, historyTime *time.Time) (bool, error) {
 	if node.Value != "add" && node.Value != "copy" {
 		return true, nil
 	}
 
-	src, err := b.getFilesToCopy(node)
+	src, err := s.getFilesToCopy(node)
 	if err != nil {
 		return false, err
 	}
@@ -1102,12 +1171,7 @@ func (b *Executor) copiedFilesMatch(node *parser.Node, historyTime *time.Time) (
 		// Change the time format to ensure we don't run into a parsing error when converting again from string
 		// to time.Time. It is a known Go issue that the conversions cause errors sometimes, so specifying a particular
 		// time format here when converting to a string.
-		// If the COPY has --from in the command, change the rootdir to mountpoint of the container it is copying from
-		rootdir := b.contextDir
-		if b.copyFrom != "" {
-			rootdir = b.copyFrom
-		}
-		timeIsGreater, err := resolveModifiedTime(rootdir, item, historyTime.Format(time.RFC3339Nano))
+		timeIsGreater, err := resolveModifiedTime(s.copyFrom, item, historyTime.Format(time.RFC3339Nano))
 		if err != nil {
 			return false, errors.Wrapf(err, "error resolving symlinks and comparing modified times: %q", item)
 		}
@@ -1139,43 +1203,45 @@ func urlContentModified(url string, historyTime *time.Time) (bool, error) {
 
 // Commit writes the container's contents to an image, using a passed-in tag as
 // the name if there is one, generating a unique ID-based one otherwise.
-func (b *Executor) Commit(ctx context.Context, ib *imagebuilder.Builder, createdBy string) (string, reference.Canonical, error) {
-	imageRef, err := b.resolveNameToImageRef()
+func (s *StageExecutor) Commit(ctx context.Context, ib *imagebuilder.Builder, createdBy, output string) (string, reference.Canonical, error) {
+	imageRef, err := s.executor.resolveNameToImageRef(output)
 	if err != nil {
 		return "", nil, err
 	}
 
 	if ib.Author != "" {
-		b.builder.SetMaintainer(ib.Author)
+		s.builder.SetMaintainer(ib.Author)
 	}
 	config := ib.Config()
-	b.builder.SetCreatedBy(createdBy)
-	b.builder.SetHostname(config.Hostname)
-	b.builder.SetDomainname(config.Domainname)
-	b.builder.SetUser(config.User)
-	b.builder.ClearPorts()
+	if createdBy != "" {
+		s.builder.SetCreatedBy(createdBy)
+	}
+	s.builder.SetHostname(config.Hostname)
+	s.builder.SetDomainname(config.Domainname)
+	s.builder.SetUser(config.User)
+	s.builder.ClearPorts()
 	for p := range config.ExposedPorts {
-		b.builder.SetPort(string(p))
+		s.builder.SetPort(string(p))
 	}
 	for _, envSpec := range config.Env {
 		spec := strings.SplitN(envSpec, "=", 2)
-		b.builder.SetEnv(spec[0], spec[1])
+		s.builder.SetEnv(spec[0], spec[1])
 	}
-	b.builder.SetCmd(config.Cmd)
-	b.builder.ClearVolumes()
+	s.builder.SetCmd(config.Cmd)
+	s.builder.ClearVolumes()
 	for v := range config.Volumes {
-		b.builder.AddVolume(v)
+		s.builder.AddVolume(v)
 	}
-	b.builder.ClearOnBuild()
+	s.builder.ClearOnBuild()
 	for _, onBuildSpec := range config.OnBuild {
-		b.builder.SetOnBuild(onBuildSpec)
+		s.builder.SetOnBuild(onBuildSpec)
 	}
-	b.builder.SetWorkDir(config.WorkingDir)
-	b.builder.SetEntrypoint(config.Entrypoint)
-	b.builder.SetShell(config.Shell)
-	b.builder.SetStopSignal(config.StopSignal)
+	s.builder.SetWorkDir(config.WorkingDir)
+	s.builder.SetEntrypoint(config.Entrypoint)
+	s.builder.SetShell(config.Shell)
+	s.builder.SetStopSignal(config.StopSignal)
 	if config.Healthcheck != nil {
-		b.builder.SetHealthcheck(&buildahdocker.HealthConfig{
+		s.builder.SetHealthcheck(&buildahdocker.HealthConfig{
 			Test:        append([]string{}, config.Healthcheck.Test...),
 			Interval:    config.Healthcheck.Interval,
 			Timeout:     config.Healthcheck.Timeout,
@@ -1183,79 +1249,124 @@ func (b *Executor) Commit(ctx context.Context, ib *imagebuilder.Builder, created
 			Retries:     config.Healthcheck.Retries,
 		})
 	} else {
-		b.builder.SetHealthcheck(nil)
+		s.builder.SetHealthcheck(nil)
 	}
-	b.builder.ClearLabels()
+	s.builder.ClearLabels()
 	for k, v := range config.Labels {
-		b.builder.SetLabel(k, v)
+		s.builder.SetLabel(k, v)
 	}
-	for _, labelSpec := range b.labels {
+	for _, labelSpec := range s.executor.labels {
 		label := strings.SplitN(labelSpec, "=", 2)
 		if len(label) > 1 {
-			b.builder.SetLabel(label[0], label[1])
+			s.builder.SetLabel(label[0], label[1])
 		} else {
-			b.builder.SetLabel(label[0], "")
+			s.builder.SetLabel(label[0], "")
 		}
 	}
-	for _, annotationSpec := range b.annotations {
+	for _, annotationSpec := range s.executor.annotations {
 		annotation := strings.SplitN(annotationSpec, "=", 2)
 		if len(annotation) > 1 {
-			b.builder.SetAnnotation(annotation[0], annotation[1])
+			s.builder.SetAnnotation(annotation[0], annotation[1])
 		} else {
-			b.builder.SetAnnotation(annotation[0], "")
+			s.builder.SetAnnotation(annotation[0], "")
 		}
 	}
 	if imageRef != nil {
 		logName := transports.ImageName(imageRef)
 		logrus.Debugf("COMMIT %q", logName)
-		if !b.quiet && !b.layers && !b.noCache {
-			b.log("COMMIT %s", logName)
+		if !s.executor.quiet && !s.executor.layers && s.executor.useCache {
+			s.executor.log("COMMIT %s", logName)
 		}
 	} else {
 		logrus.Debugf("COMMIT")
-		if !b.quiet && !b.layers && !b.noCache {
-			b.log("COMMIT")
+		if !s.executor.quiet && !s.executor.layers && s.executor.useCache {
+			s.executor.log("COMMIT")
 		}
 	}
-	writer := b.reportWriter
-	if b.layers || b.noCache {
+	writer := s.executor.reportWriter
+	if s.executor.layers || !s.executor.useCache {
 		writer = nil
 	}
 	options := buildah.CommitOptions{
-		Compression:           b.compression,
-		SignaturePolicyPath:   b.signaturePolicyPath,
-		AdditionalTags:        b.additionalTags,
+		Compression:           s.executor.compression,
+		SignaturePolicyPath:   s.executor.signaturePolicyPath,
+		AdditionalTags:        s.executor.additionalTags,
 		ReportWriter:          writer,
-		PreferredManifestType: b.outputFormat,
-		SystemContext:         b.systemContext,
-		IIDFile:               b.iidfile,
-		Squash:                b.squash,
-		BlobDirectory:         b.blobDirectory,
-		Parent:                b.builder.FromImageID,
-	}
-	imgID, ref, _, err := b.builder.Commit(ctx, imageRef, options)
+		PreferredManifestType: s.executor.outputFormat,
+		SystemContext:         s.executor.systemContext,
+		IIDFile:               s.executor.iidfile,
+		Squash:                s.executor.squash,
+		BlobDirectory:         s.executor.blobDirectory,
+		Parent:                s.builder.FromImageID,
+	}
+	imgID, _, manifestDigest, err := s.builder.Commit(ctx, imageRef, options)
 	if err != nil {
 		return "", nil, err
 	}
 	if options.IIDFile == "" && imgID != "" {
-		fmt.Fprintf(b.out, "--> %s\n", imgID)
+		fmt.Fprintf(s.executor.out, "--> %s\n", imgID)
+	}
+	var ref reference.Canonical
+	if dref := imageRef.DockerReference(); dref != nil {
+		if ref, err = reference.WithDigest(dref, manifestDigest); err != nil {
+			return "", nil, errors.Wrapf(err, "error computing canonical reference for new image %q", imgID)
+		}
 	}
 	return imgID, ref, nil
 }
 
 // Build takes care of the details of running Prepare/Execute/Commit/Delete
 // over each of the one or more parsed Dockerfiles and stages.
-func (b *Executor) Build(ctx context.Context, stages imagebuilder.Stages) (string, reference.Canonical, error) {
+func (b *Executor) Build(ctx context.Context, stages imagebuilder.Stages) (imageID string, ref reference.Canonical, err error) {
 	if len(stages) == 0 {
-		errors.New("error building: no stages to build")
+		return "", nil, errors.New("error building: no stages to build")
 	}
 	var (
-		stageExecutor *Executor
-		lastErr       error
+		stageExecutor *StageExecutor
+		cleanupImages []string
 	)
-	b.imageMap = make(map[string]string)
-	stageCount := 0
-	for _, stage := range stages {
+	cleanupStages := make(map[int]*StageExecutor)
+
+	cleanup := func() error {
+		var lastErr error
+		// Clean up any containers associated with the final container
+		// built by a stage, for stages that succeeded, since we no
+		// longer need their filesystem contents.
+		for _, stage := range cleanupStages {
+			if err := stage.Delete(); err != nil {
+				logrus.Debugf("Failed to cleanup stage containers: %v", err)
+				lastErr = err
+			}
+		}
+		cleanupStages = nil
+		// Clean up any intermediate containers associated with stages,
+		// since we're not keeping them for debugging.
+		if b.removeIntermediateCtrs {
+			if err := b.deleteSuccessfulIntermediateCtrs(); err != nil {
+				logrus.Debugf("Failed to cleanup intermediate containers: %v", err)
+				lastErr = err
+			}
+		}
+		// Remove images from stages except the last one, since we're
+		// not going to use them as a starting point for any new
+		// stages.
+		for i := range cleanupImages {
+			removeID := cleanupImages[len(cleanupImages)-i-1]
+			if _, err := b.store.DeleteImage(removeID, true); err != nil {
+				logrus.Debugf("failed to remove intermediate image %q: %v", removeID, err)
+				if b.forceRmIntermediateCtrs || errors.Cause(err) != storage.ErrImageUsedByContainer {
+					lastErr = err
+				}
+			}
+		}
+		cleanupImages = nil
+		return lastErr
+	}
+	defer cleanup()
+
+	for stageIndex, stage := range stages {
+		var lastErr error
+
 		ib := stage.Builder
 		node := stage.Node
 		base, err := ib.From(node)
@@ -1264,82 +1375,73 @@ func (b *Executor) Build(ctx context.Context, stages imagebuilder.Stages) (strin
 			return "", nil, err
 		}
 
-		stageExecutor = b.withName(stage.Name, stage.Position, base)
+		// If this is the last stage, then the image that we produce at
+		// its end should be given the desired output name.
+		output := ""
+		if stageIndex == len(stages)-1 {
+			output = b.output
+		}
+
+		stageExecutor = b.startStage(stage.Name, stage.Position, len(stages), base, output)
 		if err := stageExecutor.Prepare(ctx, stage, base); err != nil {
 			return "", nil, err
 		}
+
 		// Always remove the intermediate/build containers, even if the build was unsuccessful.
 		// If building with layers, remove all intermediate/build containers if b.forceRmIntermediateCtrs
 		// is true.
-		if b.forceRmIntermediateCtrs || (!b.layers && !b.noCache) {
-			defer stageExecutor.Delete()
+		if b.forceRmIntermediateCtrs || !b.layers {
+			cleanupStages[stage.Position] = stageExecutor
 		}
-		if err := stageExecutor.Execute(ctx, stage); err != nil {
+		if imageID, ref, err = stageExecutor.Execute(ctx, stage); err != nil {
 			lastErr = err
 		}
-
-		// Delete the successful intermediate containers if an error in the build
-		// process occurs and b.removeIntermediateCtrs is true.
 		if lastErr != nil {
-			if b.removeIntermediateCtrs {
-				stageExecutor.deleteSuccessfulIntermediateCtrs()
-			}
 			return "", nil, lastErr
 		}
-		b.containerIDs = append(b.containerIDs, stageExecutor.containerIDs...)
-		// If we've a stage.Name with alpha and not numeric, we've an
-		// AS clause in play.  Create an intermediate image for this
-		// stage to be used by other FROM statements that will want
-		// to use it later in the Dockerfile.  Note the id in our map.
+		if !b.forceRmIntermediateCtrs && b.removeIntermediateCtrs {
+			cleanupStages[stage.Position] = stageExecutor
+		}
+
+		// If this is an intermediate stage, make a note to remove its
+		// image later.
 		if _, err := strconv.Atoi(stage.Name); err != nil {
-			imgID, _, err := stageExecutor.Commit(ctx, stages[stageCount].Builder, "")
-			if err != nil {
+			if imageID, ref, err = stageExecutor.Commit(ctx, stages[stageIndex].Builder, "", output); err != nil {
 				return "", nil, err
 			}
-			b.imageMap[stage.Name] = imgID
+			b.imageMap[stage.Name] = imageID
+			cleanupImages = append(cleanupImages, imageID)
 		}
-		stageCount++
+	}
+	if len(b.unusedArgs) > 0 {
+		unusedList := make([]string, 0, len(b.unusedArgs))
+		for k := range b.unusedArgs {
+			unusedList = append(unusedList, k)
+		}
+		sort.Strings(unusedList)
+		fmt.Fprintf(b.out, "[Warning] one or more build args were not consumed: %v\n", unusedList)
 	}
 
-	var imageRef reference.Canonical
-	imageID := ""
-
-	// Check if we have a one line Dockerfile making layers irrelevant
-	// or the user told us to ignore layers.
+	// Check if we have a one line Dockerfile (i.e., single phase, no
+	// actual steps) making layers irrelevant, or the user told us to
+	// ignore layers.
 	singleLineDockerfile := (len(stages) < 2 && len(stages[0].Node.Children) < 1)
-	ignoreLayers := singleLineDockerfile || !b.layers && !b.noCache
+	ignoreLayers := singleLineDockerfile || !b.layers && b.useCache
 
 	if ignoreLayers {
-		imgID, ref, err := stageExecutor.Commit(ctx, stages[len(stages)-1].Builder, "")
-		if err != nil {
+		if imageID, ref, err = stageExecutor.Commit(ctx, stages[len(stages)-1].Builder, "", b.output); err != nil {
 			return "", nil, err
 		}
 		if singleLineDockerfile {
 			b.log("COMMIT %s", ref)
 		}
-		imageID = imgID
-		imageRef = ref
-	}
-	// If building with layers and b.removeIntermediateCtrs is true
-	// only remove intermediate container for each step if an error
-	// during the build process doesn't occur.
-	// If the build is unsuccessful, the container created at the step
-	// the failure happened will persist in the container store.
-	// This if condition will be false if not building with layers and
-	// the removal of intermediate/build containers will be handled by the
-	// defer statement above.
-	if b.removeIntermediateCtrs && (b.layers || b.noCache) {
-		if err := b.deleteSuccessfulIntermediateCtrs(); err != nil {
-			return "", nil, errors.Errorf("Failed to cleanup intermediate containers")
-		}
 	}
-	// Remove intermediate images that we created for AS clause handling
-	for _, value := range b.imageMap {
-		if _, err := b.store.DeleteImage(value, true); err != nil {
-			logrus.Debugf("unable to remove intermediate image %q: %v", value, err)
-		}
+
+	if err := cleanup(); err != nil {
+		return "", nil, err
 	}
-	return imageID, imageRef, nil
+
+	return imageID, ref, nil
 }
 
 // BuildDockerfiles parses a set of one or more Dockerfiles (which may be
@@ -1450,7 +1552,6 @@ func BuildDockerfiles(ctx context.Context, store storage.Store, options BuildOpt
 // prepending a new FROM statement the Dockerfile that do not already have a corresponding
 // FROM command within them.
 func processCopyFrom(dockerfiles []io.ReadCloser) []io.ReadCloser {
-
 	var newDockerfiles []io.ReadCloser
 	// fromMap contains the names of the images seen in a FROM
 	// line in the Dockerfiles.  The boolean value just completes the map object.
@@ -1520,23 +1621,31 @@ func processCopyFrom(dockerfiles []io.ReadCloser) []io.ReadCloser {
 	return newDockerfiles
 }
 
-// deleteSuccessfulIntermediateCtrs goes through the container IDs in b.containerIDs
-// and deletes the containers associated with that ID.
+// deleteSuccessfulIntermediateCtrs goes through the container IDs in each
+// stage's containerIDs list and deletes the containers associated with those
+// IDs.
 func (b *Executor) deleteSuccessfulIntermediateCtrs() error {
 	var lastErr error
-	for _, ctr := range b.containerIDs {
-		if err := b.store.DeleteContainer(ctr); err != nil {
-			logrus.Errorf("error deleting build container %q: %v\n", ctr, err)
-			lastErr = err
+	for _, s := range b.stages {
+		for _, ctr := range s.containerIDs {
+			if err := b.store.DeleteContainer(ctr); err != nil {
+				logrus.Errorf("error deleting build container %q: %v\n", ctr, err)
+				lastErr = err
+			}
 		}
+		// The stages map includes some stages under multiple keys, so
+		// clearing their lists after we process a given stage is
+		// necessary to avoid triggering errors that would occur if we
+		// tried to delete a given stage's containers multiple times.
+		s.containerIDs = nil
 	}
 	return lastErr
 }
 
-func (b *Executor) EnsureContainerPath(path string) error {
-	_, err := os.Stat(filepath.Join(b.mountPoint, path))
+func (s *StageExecutor) EnsureContainerPath(path string) error {
+	_, err := os.Stat(filepath.Join(s.mountPoint, path))
 	if err != nil && os.IsNotExist(err) {
-		err = os.MkdirAll(filepath.Join(b.mountPoint, path), 0755)
+		err = os.MkdirAll(filepath.Join(s.mountPoint, path), 0755)
 	}
 	if err != nil {
 		return errors.Wrapf(err, "error ensuring container path %q", path)
diff --git a/vendor/github.com/containers/buildah/imagebuildah/util.go b/vendor/github.com/containers/buildah/imagebuildah/util.go
index 4f5301b73..35dc5438a 100644
--- a/vendor/github.com/containers/buildah/imagebuildah/util.go
+++ b/vendor/github.com/containers/buildah/imagebuildah/util.go
@@ -111,28 +111,3 @@ func TempDirForURL(dir, prefix, url string) (name string, subdir string, err err
 func InitReexec() bool {
 	return buildah.InitReexec()
 }
-
-// ReposToMap parses the specified repotags and returns a map with repositories
-// as keys and the corresponding arrays of tags as values.
-func ReposToMap(repotags []string) map[string][]string {
-	// map format is repo -> tag
-	repos := make(map[string][]string)
-	for _, repo := range repotags {
-		var repository, tag string
-		if strings.Contains(repo, ":") {
-			li := strings.LastIndex(repo, ":")
-			repository = repo[0:li]
-			tag = repo[li+1:]
-		} else if len(repo) > 0 {
-			repository = repo
-			tag = "<none>"
-		} else {
-			logrus.Warnf("Found image with empty name")
-		}
-		repos[repository] = append(repos[repository], tag)
-	}
-	if len(repos) == 0 {
-		repos["<none>"] = []string{"<none>"}
-	}
-	return repos
-}
diff --git a/vendor/github.com/containers/buildah/import.go b/vendor/github.com/containers/buildah/import.go
index f5f156be2..418487438 100644
--- a/vendor/github.com/containers/buildah/import.go
+++ b/vendor/github.com/containers/buildah/import.go
@@ -17,7 +17,11 @@ func importBuilderDataFromImage(ctx context.Context, store storage.Store, system
 		return nil, errors.Errorf("Internal error: imageID is empty in importBuilderDataFromImage")
 	}
 
-	uidmap, gidmap := convertStorageIDMaps(storage.DefaultStoreOptions.UIDMap, storage.DefaultStoreOptions.GIDMap)
+	storeopts, err := storage.DefaultStoreOptions(false, 0)
+	if err != nil {
+		return nil, err
+	}
+	uidmap, gidmap := convertStorageIDMaps(storeopts.UIDMap, storeopts.GIDMap)
 
 	ref, err := is.Transport.ParseStoreReference(store, imageID)
 	if err != nil {
@@ -83,7 +87,7 @@ func importBuilder(ctx context.Context, store storage.Store, options ImportOptio
 		return nil, err
 	}
 
-	systemContext := getSystemContext(&types.SystemContext{}, options.SignaturePolicyPath)
+	systemContext := getSystemContext(store, &types.SystemContext{}, options.SignaturePolicyPath)
 
 	builder, err := importBuilderDataFromImage(ctx, store, systemContext, c.ImageID, options.Container, c.ID)
 	if err != nil {
@@ -115,7 +119,7 @@ func importBuilderFromImage(ctx context.Context, store storage.Store, options Im
 		return nil, errors.Errorf("image name must be specified")
 	}
 
-	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+	systemContext := getSystemContext(store, options.SystemContext, options.SignaturePolicyPath)
 
 	_, img, err := util.FindImage(store, "", systemContext, options.Image)
 	if err != nil {
diff --git a/vendor/github.com/containers/buildah/info.go b/vendor/github.com/containers/buildah/info.go
index 8cd5e4438..7c73da87e 100644
--- a/vendor/github.com/containers/buildah/info.go
+++ b/vendor/github.com/containers/buildah/info.go
@@ -11,7 +11,7 @@ import (
 	"strings"
 	"time"
 
-	"github.com/containers/libpod/pkg/rootless"
+	"github.com/containers/buildah/unshare"
 	"github.com/containers/storage"
 	"github.com/containers/storage/pkg/system"
 	"github.com/sirupsen/logrus"
@@ -47,7 +47,7 @@ func hostInfo() (map[string]interface{}, error) {
 	info["os"] = runtime.GOOS
 	info["arch"] = runtime.GOARCH
 	info["cpus"] = runtime.NumCPU()
-	info["rootless"] = rootless.IsRootless()
+	info["rootless"] = unshare.IsRootless()
 	mi, err := system.ReadMemInfo()
 	if err != nil {
 		logrus.Error(err, "err reading memory info")
diff --git a/vendor/github.com/containers/buildah/new.go b/vendor/github.com/containers/buildah/new.go
index 262c90220..29546caba 100644
--- a/vendor/github.com/containers/buildah/new.go
+++ b/vendor/github.com/containers/buildah/new.go
@@ -29,7 +29,7 @@ func pullAndFindImage(ctx context.Context, store storage.Store, srcRef types.Ima
 		ReportWriter:  options.ReportWriter,
 		Store:         store,
 		SystemContext: options.SystemContext,
-		BlobDirectory: options.PullBlobDirectory,
+		BlobDirectory: options.BlobDirectory,
 	}
 	ref, err := pullImage(ctx, store, srcRef, pullOptions, sc)
 	if err != nil {
@@ -244,7 +244,7 @@ func newBuilder(ctx context.Context, store storage.Store, options BuilderOptions
 		options.FromImage = ""
 	}
 
-	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+	systemContext := getSystemContext(store, options.SystemContext, options.SignaturePolicyPath)
 
 	if options.FromImage != "" && options.FromImage != "scratch" {
 		ref, _, img, err = resolveImage(ctx, systemContext, store, options)
diff --git a/vendor/github.com/containers/buildah/pkg/chrootuser/user.go b/vendor/github.com/containers/buildah/pkg/chrootuser/user.go
new file mode 100644
index 000000000..c83dcc230
--- /dev/null
+++ b/vendor/github.com/containers/buildah/pkg/chrootuser/user.go
@@ -0,0 +1,108 @@
+package chrootuser
+
+import (
+	"os/user"
+	"strconv"
+	"strings"
+
+	"github.com/pkg/errors"
+)
+
+var (
+	// ErrNoSuchUser indicates that the user provided by the caller does not
+	// exist in /etc/passws
+	ErrNoSuchUser = errors.New("user does not exist in /etc/passwd")
+)
+
+// GetUser will return the uid, gid of the user specified in the userspec
+// it will use the /etc/passwd and /etc/group files inside of the rootdir
+// to return this information.
+// userspec format [user | user:group | uid | uid:gid | user:gid | uid:group ]
+func GetUser(rootdir, userspec string) (uint32, uint32, error) {
+	var gid64 uint64
+	var gerr error = user.UnknownGroupError("error looking up group")
+
+	spec := strings.SplitN(userspec, ":", 2)
+	userspec = spec[0]
+	groupspec := ""
+	if userspec == "" {
+		return 0, 0, nil
+	}
+	if len(spec) > 1 {
+		groupspec = spec[1]
+	}
+
+	uid64, uerr := strconv.ParseUint(userspec, 10, 32)
+	if uerr == nil && groupspec == "" {
+		// We parsed the user name as a number, and there's no group
+		// component, so try to look up the primary GID of the user who
+		// has this UID.
+		var name string
+		name, gid64, gerr = lookupGroupForUIDInContainer(rootdir, uid64)
+		if gerr == nil {
+			userspec = name
+		} else {
+			// Leave userspec alone, but swallow the error and just
+			// use GID 0.
+			gid64 = 0
+			gerr = nil
+		}
+	}
+	if uerr != nil {
+		// The user ID couldn't be parsed as a number, so try to look
+		// up the user's UID and primary GID.
+		uid64, gid64, uerr = lookupUserInContainer(rootdir, userspec)
+		gerr = uerr
+	}
+
+	if groupspec != "" {
+		// We have a group name or number, so parse it.
+		gid64, gerr = strconv.ParseUint(groupspec, 10, 32)
+		if gerr != nil {
+			// The group couldn't be parsed as a number, so look up
+			// the group's GID.
+			gid64, gerr = lookupGroupInContainer(rootdir, groupspec)
+		}
+	}
+
+	if uerr == nil && gerr == nil {
+		return uint32(uid64), uint32(gid64), nil
+	}
+
+	err := errors.Wrapf(uerr, "error determining run uid")
+	if uerr == nil {
+		err = errors.Wrapf(gerr, "error determining run gid")
+	}
+	return 0, 0, err
+}
+
+// GetGroup returns the gid by looking it up in the /etc/group file
+// groupspec format [ group | gid ]
+func GetGroup(rootdir, groupspec string) (uint32, error) {
+	gid64, gerr := strconv.ParseUint(groupspec, 10, 32)
+	if gerr != nil {
+		// The group couldn't be parsed as a number, so look up
+		// the group's GID.
+		gid64, gerr = lookupGroupInContainer(rootdir, groupspec)
+	}
+	if gerr != nil {
+		return 0, errors.Wrapf(gerr, "error looking up group for gid %q", groupspec)
+	}
+	return uint32(gid64), nil
+}
+
+// GetAdditionalGroupsForUser returns a list of gids that userid is associated with
+func GetAdditionalGroupsForUser(rootdir string, userid uint64) ([]uint32, error) {
+	gids, err := lookupAdditionalGroupsForUIDInContainer(rootdir, userid)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error looking up supplemental groups for uid %d", userid)
+	}
+	return gids, nil
+}
+
+// LookupUIDInContainer returns username and gid associated with a UID in a container
+// it will use the /etc/passwd files inside of the rootdir
+// to return this information.
+func LookupUIDInContainer(rootdir string, uid uint64) (user string, gid uint64, err error) {
+	return lookupUIDInContainer(rootdir, uid)
+}
diff --git a/vendor/github.com/containers/buildah/pkg/chrootuser/user_basic.go b/vendor/github.com/containers/buildah/pkg/chrootuser/user_basic.go
new file mode 100644
index 000000000..79b0b24b5
--- /dev/null
+++ b/vendor/github.com/containers/buildah/pkg/chrootuser/user_basic.go
@@ -0,0 +1,27 @@
+// +build !linux
+
+package chrootuser
+
+import (
+	"github.com/pkg/errors"
+)
+
+func lookupUserInContainer(rootdir, username string) (uint64, uint64, error) {
+	return 0, 0, errors.New("user lookup not supported")
+}
+
+func lookupGroupInContainer(rootdir, groupname string) (uint64, error) {
+	return 0, errors.New("group lookup not supported")
+}
+
+func lookupGroupForUIDInContainer(rootdir string, userid uint64) (string, uint64, error) {
+	return "", 0, errors.New("primary group lookup by uid not supported")
+}
+
+func lookupAdditionalGroupsForUIDInContainer(rootdir string, userid uint64) (gid []uint32, err error) {
+	return nil, errors.New("supplemental groups list lookup by uid not supported")
+}
+
+func lookupUIDInContainer(rootdir string, uid uint64) (string, uint64, error) {
+	return "", 0, errors.New("UID lookup not supported")
+}
diff --git a/vendor/github.com/containers/buildah/pkg/chrootuser/user_linux.go b/vendor/github.com/containers/buildah/pkg/chrootuser/user_linux.go
new file mode 100644
index 000000000..583eca569
--- /dev/null
+++ b/vendor/github.com/containers/buildah/pkg/chrootuser/user_linux.go
@@ -0,0 +1,293 @@
+// +build linux
+
+package chrootuser
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"io"
+	"os"
+	"os/exec"
+	"os/user"
+	"strconv"
+	"strings"
+	"sync"
+
+	"github.com/containers/storage/pkg/reexec"
+	"github.com/sirupsen/logrus"
+	"golang.org/x/sys/unix"
+)
+
+const (
+	openChrootedCommand = "chrootuser-open"
+)
+
+func init() {
+	reexec.Register(openChrootedCommand, openChrootedFileMain)
+}
+
+func openChrootedFileMain() {
+	status := 0
+	flag.Parse()
+	if len(flag.Args()) < 1 {
+		os.Exit(1)
+	}
+	// Our first parameter is the directory to chroot into.
+	if err := unix.Chdir(flag.Arg(0)); err != nil {
+		fmt.Fprintf(os.Stderr, "chdir(): %v", err)
+		os.Exit(1)
+	}
+	if err := unix.Chroot(flag.Arg(0)); err != nil {
+		fmt.Fprintf(os.Stderr, "chroot(): %v", err)
+		os.Exit(1)
+	}
+	// Anything else is a file we want to dump out.
+	for _, filename := range flag.Args()[1:] {
+		f, err := os.Open(filename)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "open(%q): %v", filename, err)
+			status = 1
+			continue
+		}
+		_, err = io.Copy(os.Stdout, f)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "read(%q): %v", filename, err)
+		}
+		f.Close()
+	}
+	os.Exit(status)
+}
+
+func openChrootedFile(rootdir, filename string) (*exec.Cmd, io.ReadCloser, error) {
+	// The child process expects a chroot and one or more filenames that
+	// will be consulted relative to the chroot directory and concatenated
+	// to its stdout.  Start it up.
+	cmd := reexec.Command(openChrootedCommand, rootdir, filename)
+	stdout, err := cmd.StdoutPipe()
+	if err != nil {
+		return nil, nil, err
+	}
+	err = cmd.Start()
+	if err != nil {
+		return nil, nil, err
+	}
+	// Hand back the child's stdout for reading, and the child to reap.
+	return cmd, stdout, nil
+}
+
+var (
+	lookupUser, lookupGroup sync.Mutex
+)
+
+type lookupPasswdEntry struct {
+	name string
+	uid  uint64
+	gid  uint64
+}
+type lookupGroupEntry struct {
+	name string
+	gid  uint64
+	user string
+}
+
+func readWholeLine(rc *bufio.Reader) ([]byte, error) {
+	line, isPrefix, err := rc.ReadLine()
+	if err != nil {
+		return nil, err
+	}
+	for isPrefix {
+		// We didn't get a whole line.  Keep reading chunks until we find an end of line, and discard them.
+		for isPrefix {
+			logrus.Debugf("discarding partial line %q", string(line))
+			_, isPrefix, err = rc.ReadLine()
+			if err != nil {
+				return nil, err
+			}
+		}
+		// That last read was the end of a line, so now we try to read the (beginning of?) the next line.
+		line, isPrefix, err = rc.ReadLine()
+		if err != nil {
+			return nil, err
+		}
+	}
+	return line, nil
+}
+
+func parseNextPasswd(rc *bufio.Reader) *lookupPasswdEntry {
+	line, err := readWholeLine(rc)
+	if err != nil {
+		return nil
+	}
+	fields := strings.Split(string(line), ":")
+	if len(fields) < 7 {
+		return nil
+	}
+	uid, err := strconv.ParseUint(fields[2], 10, 32)
+	if err != nil {
+		return nil
+	}
+	gid, err := strconv.ParseUint(fields[3], 10, 32)
+	if err != nil {
+		return nil
+	}
+	return &lookupPasswdEntry{
+		name: fields[0],
+		uid:  uid,
+		gid:  gid,
+	}
+}
+
+func parseNextGroup(rc *bufio.Reader) *lookupGroupEntry {
+	line, err := readWholeLine(rc)
+	if err != nil {
+		return nil
+	}
+	fields := strings.Split(string(line), ":")
+	if len(fields) < 4 {
+		return nil
+	}
+	gid, err := strconv.ParseUint(fields[2], 10, 32)
+	if err != nil {
+		return nil
+	}
+	return &lookupGroupEntry{
+		name: fields[0],
+		gid:  gid,
+		user: fields[3],
+	}
+}
+
+func lookupUserInContainer(rootdir, username string) (uid uint64, gid uint64, err error) {
+	cmd, f, err := openChrootedFile(rootdir, "/etc/passwd")
+	if err != nil {
+		return 0, 0, err
+	}
+	defer func() {
+		_ = cmd.Wait()
+	}()
+	rc := bufio.NewReader(f)
+	defer f.Close()
+
+	lookupUser.Lock()
+	defer lookupUser.Unlock()
+
+	pwd := parseNextPasswd(rc)
+	for pwd != nil {
+		if pwd.name != username {
+			pwd = parseNextPasswd(rc)
+			continue
+		}
+		return pwd.uid, pwd.gid, nil
+	}
+
+	return 0, 0, user.UnknownUserError(fmt.Sprintf("error looking up user %q", username))
+}
+
+func lookupGroupForUIDInContainer(rootdir string, userid uint64) (username string, gid uint64, err error) {
+	cmd, f, err := openChrootedFile(rootdir, "/etc/passwd")
+	if err != nil {
+		return "", 0, err
+	}
+	defer func() {
+		_ = cmd.Wait()
+	}()
+	rc := bufio.NewReader(f)
+	defer f.Close()
+
+	lookupUser.Lock()
+	defer lookupUser.Unlock()
+
+	pwd := parseNextPasswd(rc)
+	for pwd != nil {
+		if pwd.uid != userid {
+			pwd = parseNextPasswd(rc)
+			continue
+		}
+		return pwd.name, pwd.gid, nil
+	}
+
+	return "", 0, ErrNoSuchUser
+}
+
+func lookupAdditionalGroupsForUIDInContainer(rootdir string, userid uint64) (gid []uint32, err error) {
+	// Get the username associated with userid
+	username, _, err := lookupGroupForUIDInContainer(rootdir, userid)
+	if err != nil {
+		return nil, err
+	}
+
+	cmd, f, err := openChrootedFile(rootdir, "/etc/group")
+	if err != nil {
+		return nil, err
+	}
+	defer func() {
+		_ = cmd.Wait()
+	}()
+	rc := bufio.NewReader(f)
+	defer f.Close()
+
+	lookupGroup.Lock()
+	defer lookupGroup.Unlock()
+
+	grp := parseNextGroup(rc)
+	for grp != nil {
+		if strings.Contains(grp.user, username) {
+			gid = append(gid, uint32(grp.gid))
+		}
+		grp = parseNextGroup(rc)
+	}
+	return gid, nil
+}
+
+func lookupGroupInContainer(rootdir, groupname string) (gid uint64, err error) {
+	cmd, f, err := openChrootedFile(rootdir, "/etc/group")
+	if err != nil {
+		return 0, err
+	}
+	defer func() {
+		_ = cmd.Wait()
+	}()
+	rc := bufio.NewReader(f)
+	defer f.Close()
+
+	lookupGroup.Lock()
+	defer lookupGroup.Unlock()
+
+	grp := parseNextGroup(rc)
+	for grp != nil {
+		if grp.name != groupname {
+			grp = parseNextGroup(rc)
+			continue
+		}
+		return grp.gid, nil
+	}
+
+	return 0, user.UnknownGroupError(fmt.Sprintf("error looking up group %q", groupname))
+}
+
+func lookupUIDInContainer(rootdir string, uid uint64) (string, uint64, error) {
+	cmd, f, err := openChrootedFile(rootdir, "/etc/passwd")
+	if err != nil {
+		return "", 0, err
+	}
+	defer func() {
+		_ = cmd.Wait()
+	}()
+	rc := bufio.NewReader(f)
+	defer f.Close()
+
+	lookupUser.Lock()
+	defer lookupUser.Unlock()
+
+	pwd := parseNextPasswd(rc)
+	for pwd != nil {
+		if pwd.uid != uid {
+			pwd = parseNextPasswd(rc)
+			continue
+		}
+		return pwd.name, pwd.gid, nil
+	}
+
+	return "", 0, user.UnknownUserError(fmt.Sprintf("error looking up uid %q", uid))
+}
diff --git a/vendor/github.com/containers/buildah/pkg/formats/formats.go b/vendor/github.com/containers/buildah/pkg/formats/formats.go
index 37f9b8a20..e95c32fc3 100644
--- a/vendor/github.com/containers/buildah/pkg/formats/formats.go
+++ b/vendor/github.com/containers/buildah/pkg/formats/formats.go
@@ -111,17 +111,13 @@ func (t StdoutTemplateArray) Out() error {
 	if err != nil {
 		return errors.Wrapf(err, parsingErrorStr)
 	}
-	for i, raw := range t.Output {
+	for _, raw := range t.Output {
 		basicTmpl := tmpl.Funcs(basicFunctions)
 		if err := basicTmpl.Execute(w, raw); err != nil {
 			return errors.Wrapf(err, parsingErrorStr)
 		}
-		if i != len(t.Output)-1 {
-			fmt.Fprintln(w, "")
-			continue
-		}
+		fmt.Fprintln(w, "")
 	}
-	fmt.Fprintln(w, "")
 	return w.Flush()
 }
 
diff --git a/vendor/github.com/containers/buildah/pkg/parse/parse.go b/vendor/github.com/containers/buildah/pkg/parse/parse.go
index c309f686a..50318315f 100644
--- a/vendor/github.com/containers/buildah/pkg/parse/parse.go
+++ b/vendor/github.com/containers/buildah/pkg/parse/parse.go
@@ -9,7 +9,6 @@ import (
 	"github.com/spf13/cobra"
 	"net"
 	"os"
-	"os/exec"
 	"path/filepath"
 	"strconv"
 	"strings"
@@ -393,25 +392,11 @@ func IDMappingOptions(c *cobra.Command, isolation buildah.Isolation) (usernsOpti
 		gidmap = uidmap
 	}
 
-	useSlirp4netns := false
-
-	if isolation == buildah.IsolationOCIRootless {
-		_, err := exec.LookPath("slirp4netns")
-		if execerr, ok := err.(*exec.Error); ok && !strings.Contains(execerr.Error(), "not found") {
-			return nil, nil, errors.Wrapf(err, "cannot lookup slirp4netns %v", execerr)
-		}
-		if err == nil {
-			useSlirp4netns = true
-		} else {
-			logrus.Warningf("could not find slirp4netns. Using host network namespace")
-		}
-	}
-
 	// By default, having mappings configured means we use a user
 	// namespace.  Otherwise, we don't.
 	usernsOption := buildah.NamespaceOption{
 		Name: string(specs.UserNamespace),
-		Host: len(uidmap) == 0 && len(gidmap) == 0 && !useSlirp4netns,
+		Host: len(uidmap) == 0 && len(gidmap) == 0,
 	}
 	// If the user specifically requested that we either use or don't use
 	// user namespaces, override that default.
diff --git a/vendor/github.com/containers/buildah/pkg/secrets/secrets.go b/vendor/github.com/containers/buildah/pkg/secrets/secrets.go
index 3b64f8952..97b681125 100644
--- a/vendor/github.com/containers/buildah/pkg/secrets/secrets.go
+++ b/vendor/github.com/containers/buildah/pkg/secrets/secrets.go
@@ -7,7 +7,6 @@ import (
 	"path/filepath"
 	"strings"
 
-	"github.com/containers/libpod/pkg/rootless"
 	"github.com/containers/storage/pkg/idtools"
 	rspec "github.com/opencontainers/runtime-spec/specs-go"
 	"github.com/opencontainers/selinux/go-selinux/label"
@@ -133,12 +132,12 @@ func getMountsMap(path string) (string, string, error) {
 }
 
 // SecretMounts copies, adds, and mounts the secrets to the container root filesystem
-func SecretMounts(mountLabel, containerWorkingDir, mountFile string) []rspec.Mount {
-	return SecretMountsWithUIDGID(mountLabel, containerWorkingDir, mountFile, containerWorkingDir, 0, 0)
+func SecretMounts(mountLabel, containerWorkingDir, mountFile string, rootless bool) []rspec.Mount {
+	return SecretMountsWithUIDGID(mountLabel, containerWorkingDir, mountFile, containerWorkingDir, 0, 0, rootless)
 }
 
 // SecretMountsWithUIDGID specifies the uid/gid of the owner
-func SecretMountsWithUIDGID(mountLabel, containerWorkingDir, mountFile, mountPrefix string, uid, gid int) []rspec.Mount {
+func SecretMountsWithUIDGID(mountLabel, containerWorkingDir, mountFile, mountPrefix string, uid, gid int, rootless bool) []rspec.Mount {
 	var (
 		secretMounts []rspec.Mount
 		mountFiles   []string
@@ -148,17 +147,8 @@ func SecretMountsWithUIDGID(mountLabel, containerWorkingDir, mountFile, mountPre
 	// Note for testing purposes only
 	if mountFile == "" {
 		mountFiles = append(mountFiles, []string{OverrideMountsFile, DefaultMountsFile}...)
-		if rootless.IsRootless() {
+		if rootless {
 			mountFiles = append([]string{UserOverrideMountsFile}, mountFiles...)
-			_, err := os.Stat(UserOverrideMountsFile)
-			if err != nil && os.IsNotExist(err) {
-				os.MkdirAll(filepath.Dir(UserOverrideMountsFile), 0755)
-				if f, err := os.Create(UserOverrideMountsFile); err != nil {
-					logrus.Warnf("could not create file %s: %v", UserOverrideMountsFile, err)
-				} else {
-					f.Close()
-				}
-			}
 		}
 	} else {
 		mountFiles = append(mountFiles, mountFile)
diff --git a/vendor/github.com/containers/buildah/pull.go b/vendor/github.com/containers/buildah/pull.go
index d3c9870af..5eec1b3dd 100644
--- a/vendor/github.com/containers/buildah/pull.go
+++ b/vendor/github.com/containers/buildah/pull.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"io"
+
 	"strings"
 
 	"github.com/containers/buildah/pkg/blobcache"
@@ -153,13 +154,13 @@ func localImageNameForReference(ctx context.Context, store storage.Store, srcRef
 
 // Pull copies the contents of the image from somewhere else to local storage.
 func Pull(ctx context.Context, imageName string, options PullOptions) error {
-	systemContext := getSystemContext(options.SystemContext, options.SignaturePolicyPath)
+	systemContext := getSystemContext(options.Store, options.SystemContext, options.SignaturePolicyPath)
 
 	boptions := BuilderOptions{
 		FromImage:           imageName,
 		SignaturePolicyPath: options.SignaturePolicyPath,
 		SystemContext:       systemContext,
-		PullBlobDirectory:   options.BlobDirectory,
+		BlobDirectory:       options.BlobDirectory,
 		ReportWriter:        options.ReportWriter,
 	}
 
@@ -236,7 +237,7 @@ func pullImage(ctx context.Context, store storage.Store, srcRef types.ImageRefer
 	if err != nil {
 		return nil, errors.Wrapf(err, "error parsing image name %q", destName)
 	}
-	var maybeCachedDestRef types.ImageReference = destRef
+	var maybeCachedDestRef = types.ImageReference(destRef)
 	if options.BlobDirectory != "" {
 		cachedRef, err := blobcache.NewBlobCache(destRef, options.BlobDirectory, types.PreserveOriginal)
 		if err != nil {
@@ -262,7 +263,7 @@ func pullImage(ctx context.Context, store storage.Store, srcRef types.ImageRefer
 	}()
 
 	logrus.Debugf("copying %q to %q", transports.ImageName(srcRef), destName)
-	if _, err := cp.Image(ctx, policyContext, maybeCachedDestRef, srcRef, getCopyOptions(options.ReportWriter, srcRef, sc, maybeCachedDestRef, nil, "")); err != nil {
+	if _, err := cp.Image(ctx, policyContext, maybeCachedDestRef, srcRef, getCopyOptions(store, options.ReportWriter, srcRef, sc, maybeCachedDestRef, nil, "")); err != nil {
 		logrus.Debugf("error copying src image [%q] to dest image [%q] err: %v", transports.ImageName(srcRef), destName, err)
 		return nil, err
 	}
diff --git a/vendor/github.com/containers/buildah/run.go b/vendor/github.com/containers/buildah/run.go
index 2fa3cd572..cd6568b66 100644
--- a/vendor/github.com/containers/buildah/run.go
+++ b/vendor/github.com/containers/buildah/run.go
@@ -2,6 +2,7 @@ package buildah
 
 import (
 	"bytes"
+	"context"
 	"encoding/json"
 	"fmt"
 	"io"
@@ -21,6 +22,7 @@ import (
 	"github.com/containers/buildah/bind"
 	"github.com/containers/buildah/chroot"
 	"github.com/containers/buildah/pkg/secrets"
+	"github.com/containers/buildah/unshare"
 	"github.com/containers/buildah/util"
 	"github.com/containers/storage/pkg/idtools"
 	"github.com/containers/storage/pkg/ioutils"
@@ -416,7 +418,7 @@ func (b *Builder) setupMounts(mountPoint string, spec *specs.Spec, bundlePath st
 	}
 
 	// Get the list of secrets mounts.
-	secretMounts := secrets.SecretMountsWithUIDGID(b.MountLabel, cdir, b.DefaultMountsFilePath, cdir, int(rootUID), int(rootGID))
+	secretMounts := secrets.SecretMountsWithUIDGID(b.MountLabel, cdir, b.DefaultMountsFilePath, cdir, int(rootUID), int(rootGID), unshare.IsRootless())
 
 	// Add temporary copies of the contents of volume locations at the
 	// volume locations, unless we already have something there.
@@ -1720,7 +1722,7 @@ func setupRootlessNetwork(pid int) (teardown func(), err error) {
 		unix.CloseOnExec(fd)
 	}
 
-	cmd := exec.Command(slirp4netns, "-r", "3", "-c", fmt.Sprintf("%d", pid), "tap0")
+	cmd := exec.Command(slirp4netns, "--mtu", "65520", "-r", "3", "-c", fmt.Sprintf("%d", pid), "tap0")
 	cmd.Stdin, cmd.Stdout, cmd.Stderr = nil, nil, nil
 	cmd.ExtraFiles = []*os.File{rootlessSlirpSyncW}
 
@@ -1765,7 +1767,7 @@ func runConfigureNetwork(isolation Isolation, options RunOptions, configureNetwo
 	var netconf, undo []*libcni.NetworkConfigList
 
 	if isolation == IsolationOCIRootless {
-		if ns := options.NamespaceOptions.Find(string(specs.NetworkNamespace)); ns != nil && !ns.Host {
+		if ns := options.NamespaceOptions.Find(string(specs.NetworkNamespace)); ns != nil && !ns.Host && ns.Path == "" {
 			return setupRootlessNetwork(pid)
 		}
 	}
@@ -1835,7 +1837,7 @@ func runConfigureNetwork(isolation Isolation, options RunOptions, configureNetwo
 	rtconf := make(map[*libcni.NetworkConfigList]*libcni.RuntimeConf)
 	teardown = func() {
 		for _, nc := range undo {
-			if err = cni.DelNetworkList(nc, rtconf[nc]); err != nil {
+			if err = cni.DelNetworkList(context.Background(), nc, rtconf[nc]); err != nil {
 				logrus.Errorf("error cleaning up network %v for %v: %v", rtconf[nc].IfName, command, err)
 			}
 		}
@@ -1851,7 +1853,7 @@ func runConfigureNetwork(isolation Isolation, options RunOptions, configureNetwo
 			CapabilityArgs: map[string]interface{}{},
 		}
 		// Bring it up.
-		_, err := cni.AddNetworkList(nc, rtconf[nc])
+		_, err := cni.AddNetworkList(context.Background(), nc, rtconf[nc])
 		if err != nil {
 			return teardown, errors.Wrapf(err, "error configuring network list %v for %v", rtconf[nc].IfName, command)
 		}
diff --git a/vendor/github.com/containers/buildah/unshare/unshare.go b/vendor/github.com/containers/buildah/unshare/unshare.go
index 1072c2035..91f4bb54a 100644
--- a/vendor/github.com/containers/buildah/unshare/unshare.go
+++ b/vendor/github.com/containers/buildah/unshare/unshare.go
@@ -11,6 +11,7 @@ import (
 	"runtime"
 	"strconv"
 	"strings"
+	"sync"
 	"syscall"
 
 	"github.com/containers/buildah/util"
@@ -57,8 +58,8 @@ func (c *Cmd) Start() error {
 
 	// Please the libpod "rootless" package to find the expected env variables.
 	if os.Geteuid() != 0 {
-		c.Env = append(c.Env, "_LIBPOD_USERNS_CONFIGURED=done")
-		c.Env = append(c.Env, fmt.Sprintf("_LIBPOD_ROOTLESS_UID=%d", os.Geteuid()))
+		c.Env = append(c.Env, "_CONTAINERS_USERNS_CONFIGURED=done")
+		c.Env = append(c.Env, fmt.Sprintf("_CONTAINERS_ROOTLESS_UID=%d", os.Geteuid()))
 	}
 
 	// Create the pipe for reading the child's PID.
@@ -272,3 +273,36 @@ func (c *Cmd) CombinedOutput() ([]byte, error) {
 func (c *Cmd) Output() ([]byte, error) {
 	return nil, errors.New("unshare: Output() not implemented")
 }
+
+var (
+	isRootlessOnce sync.Once
+	isRootless     bool
+)
+
+const (
+	// UsernsEnvName is the environment variable, if set indicates in rootless mode
+	UsernsEnvName = "_CONTAINERS_USERNS_CONFIGURED"
+)
+
+// IsRootless tells us if we are running in rootless mode
+func IsRootless() bool {
+	isRootlessOnce.Do(func() {
+		isRootless = os.Geteuid() != 0 || os.Getenv(UsernsEnvName) != ""
+	})
+	return isRootless
+}
+
+// GetRootlessUID returns the UID of the user in the parent userNS
+func GetRootlessUID() int {
+	uidEnv := os.Getenv("_CONTAINERS_ROOTLESS_UID")
+	if uidEnv != "" {
+		u, _ := strconv.Atoi(uidEnv)
+		return u
+	}
+	return os.Getuid()
+}
+
+// RootlessEnv returns the environment settings for the rootless containers
+func RootlessEnv() []string {
+	return append(os.Environ(), UsernsEnvName+"=")
+}
diff --git a/vendor/github.com/containers/buildah/unshare/unshare_unsupported.go b/vendor/github.com/containers/buildah/unshare/unshare_unsupported.go
new file mode 100644
index 000000000..3336fdad9
--- /dev/null
+++ b/vendor/github.com/containers/buildah/unshare/unshare_unsupported.go
@@ -0,0 +1,27 @@
+// +build !linux
+
+package unshare
+
+import (
+	"os"
+)
+
+const (
+	// UsernsEnvName is the environment variable, if set indicates in rootless mode
+	UsernsEnvName = "_CONTAINERS_USERNS_CONFIGURED"
+)
+
+// IsRootless tells us if we are running in rootless mode
+func IsRootless() bool {
+	return false
+}
+
+// GetRootlessUID returns the UID of the user in the parent userNS
+func GetRootlessUID() int {
+	return os.Getuid()
+}
+
+// RootlessEnv returns the environment settings for the rootless containers
+func RootlessEnv() []string {
+	return append(os.Environ(), UsernsEnvName+"=")
+}
diff --git a/vendor/github.com/containers/buildah/vendor.conf b/vendor/github.com/containers/buildah/vendor.conf
index 53c2e673e..327de39b2 100644
--- a/vendor/github.com/containers/buildah/vendor.conf
+++ b/vendor/github.com/containers/buildah/vendor.conf
@@ -2,14 +2,13 @@ github.com/Azure/go-ansiterm d6e3b3328b783f23731bc4d058875b0371ff8109
 github.com/blang/semver v3.5.0
 github.com/BurntSushi/toml v0.2.0
 github.com/containerd/continuity 004b46473808b3e7a4a3049c20e4376c91eb966d
-github.com/containernetworking/cni v0.7.0-alpha1
-github.com/containers/image v1.5
+github.com/containernetworking/cni v0.7.0-rc2
+github.com/containers/image f52cf78ebfa1916da406f8b6210d8f7764ec1185
 github.com/vbauerster/mpb v3.3.4
 github.com/mattn/go-isatty v0.0.4
 github.com/VividCortex/ewma v1.1.1
 github.com/boltdb/bolt v1.3.1
-github.com/containers/libpod v1.0
-github.com/containers/storage v1.11
+github.com/containers/storage v1.12.1
 github.com/docker/distribution 5f6282db7d65e6d72ad7c2cc66310724a57be716
 github.com/docker/docker 54dddadc7d5d89fe0be88f76979f6f6ab0dede83
 github.com/docker/docker-credential-helpers v0.6.1
@@ -39,7 +38,7 @@ github.com/opencontainers/runc v1.0.0-rc6
 github.com/opencontainers/runtime-spec v1.0.0
 github.com/opencontainers/runtime-tools v0.8.0
 github.com/opencontainers/selinux v1.1
-github.com/openshift/imagebuilder 705fe9255c57f8505efb9723a9ac4082b67973bc
+github.com/openshift/imagebuilder v1.1.0
 github.com/ostreedev/ostree-go 9ab99253d365aac3a330d1f7281cf29f3d22820b
 github.com/pkg/errors v0.8.1
 github.com/pquerna/ffjson d49c2bc1aa135aad0c6f4fc2056623ec78f5d5ac
diff --git a/vendor/github.com/containers/image/README.md b/vendor/github.com/containers/image/README.md
index 8fd6e513e..571e8342e 100644
--- a/vendor/github.com/containers/image/README.md
+++ b/vendor/github.com/containers/image/README.md
@@ -65,7 +65,7 @@ the primary downside is that creating new signatures with the Golang-only implem
 - `containers_image_ostree_stub`: Instead of importing `ostree:` transport in `github.com/containers/image/transports/alltransports`, use a stub which reports that the transport is not supported. This allows building the library without requiring the `libostree` development libraries. The `github.com/containers/image/ostree` package is completely disabled
 and impossible to import when this build tag is in use.
 
-## [Contributing](CONTRIBUTING.md)**
+## [Contributing](CONTRIBUTING.md)
 
 Information about contributing to this project.
 
diff --git a/vendor/github.com/containers/image/copy/copy.go b/vendor/github.com/containers/image/copy/copy.go
index ba99336aa..3ed8a2b82 100644
--- a/vendor/github.com/containers/image/copy/copy.go
+++ b/vendor/github.com/containers/image/copy/copy.go
@@ -468,7 +468,7 @@ func (ic *imageCopier) copyLayers(ctx context.Context) error {
 	}
 
 	data := make([]copyLayerData, numLayers)
-	copyLayerHelper := func(index int, srcLayer types.BlobInfo, bar *mpb.Bar) {
+	copyLayerHelper := func(index int, srcLayer types.BlobInfo, pool *mpb.Progress) {
 		defer copySemaphore.Release(1)
 		defer copyGroup.Done()
 		cld := copyLayerData{}
@@ -483,24 +483,18 @@ func (ic *imageCopier) copyLayers(ctx context.Context) error {
 				logrus.Debugf("Skipping foreign layer %q copy to %s", cld.destInfo.Digest, ic.c.dest.Reference().Transport().Name())
 			}
 		} else {
-			cld.destInfo, cld.diffID, cld.err = ic.copyLayer(ctx, srcLayer, bar)
+			cld.destInfo, cld.diffID, cld.err = ic.copyLayer(ctx, srcLayer, pool)
 		}
 		data[index] = cld
-		bar.SetTotal(srcLayer.Size, true)
 	}
 
 	func() { // A scope for defer
 		progressPool, progressCleanup := ic.c.newProgressPool(ctx)
 		defer progressCleanup()
 
-		progressBars := make([]*mpb.Bar, numLayers)
-		for i, srcInfo := range srcInfos {
-			progressBars[i] = ic.c.createProgressBar(progressPool, srcInfo, "blob")
-		}
-
 		for i, srcLayer := range srcInfos {
 			copySemaphore.Acquire(ctx, 1)
-			go copyLayerHelper(i, srcLayer, progressBars[i])
+			go copyLayerHelper(i, srcLayer, progressPool)
 		}
 
 		// Wait for all layers to be copied
@@ -592,7 +586,7 @@ func (c *copier) newProgressPool(ctx context.Context) (*mpb.Progress, func()) {
 
 // createProgressBar creates a mpb.Bar in pool.  Note that if the copier's reportWriter
 // is ioutil.Discard, the progress bar's output will be discarded
-func (c *copier) createProgressBar(pool *mpb.Progress, info types.BlobInfo, kind string) *mpb.Bar {
+func (c *copier) createProgressBar(pool *mpb.Progress, info types.BlobInfo, kind string, onComplete string) *mpb.Bar {
 	// shortDigestLen is the length of the digest used for blobs.
 	const shortDigestLen = 12
 
@@ -604,11 +598,12 @@ func (c *copier) createProgressBar(pool *mpb.Progress, info types.BlobInfo, kind
 	}
 
 	bar := pool.AddBar(info.Size,
+		mpb.BarClearOnComplete(),
 		mpb.PrependDecorators(
 			decor.Name(prefix),
 		),
 		mpb.AppendDecorators(
-			decor.CountersKibiByte("%.1f / %.1f"),
+			decor.OnComplete(decor.CountersKibiByte("%.1f / %.1f"), " "+onComplete),
 		),
 	)
 	if c.progressOutput == ioutil.Discard {
@@ -629,7 +624,7 @@ func (c *copier) copyConfig(ctx context.Context, src types.Image) error {
 		destInfo, err := func() (types.BlobInfo, error) { // A scope for defer
 			progressPool, progressCleanup := c.newProgressPool(ctx)
 			defer progressCleanup()
-			bar := c.createProgressBar(progressPool, srcInfo, "config")
+			bar := c.createProgressBar(progressPool, srcInfo, "config", "done")
 			destInfo, err := c.copyBlobFromStream(ctx, bytes.NewReader(configBlob), srcInfo, nil, false, true, bar)
 			if err != nil {
 				return types.BlobInfo{}, err
@@ -656,7 +651,7 @@ type diffIDResult struct {
 
 // copyLayer copies a layer with srcInfo (with known Digest and possibly known Size) in src to dest, perhaps compressing it if canCompress,
 // and returns a complete blobInfo of the copied layer, and a value for LayerDiffIDs if diffIDIsNeeded
-func (ic *imageCopier) copyLayer(ctx context.Context, srcInfo types.BlobInfo, bar *mpb.Bar) (types.BlobInfo, digest.Digest, error) {
+func (ic *imageCopier) copyLayer(ctx context.Context, srcInfo types.BlobInfo, pool *mpb.Progress) (types.BlobInfo, digest.Digest, error) {
 	cachedDiffID := ic.c.blobInfoCache.UncompressedDigest(srcInfo.Digest) // May be ""
 	diffIDIsNeeded := ic.diffIDsAreNeeded && cachedDiffID == ""
 
@@ -668,6 +663,8 @@ func (ic *imageCopier) copyLayer(ctx context.Context, srcInfo types.BlobInfo, ba
 		}
 		if reused {
 			logrus.Debugf("Skipping blob %s (already present):", srcInfo.Digest)
+			bar := ic.c.createProgressBar(pool, srcInfo, "blob", "skipped: already exists")
+			bar.SetTotal(0, true)
 			return blobInfo, cachedDiffID, nil
 		}
 	}
@@ -679,10 +676,14 @@ func (ic *imageCopier) copyLayer(ctx context.Context, srcInfo types.BlobInfo, ba
 	}
 	defer srcStream.Close()
 
+	bar := ic.c.createProgressBar(pool, srcInfo, "blob", "done")
+
 	blobInfo, diffIDChan, err := ic.copyLayerFromStream(ctx, srcStream, types.BlobInfo{Digest: srcInfo.Digest, Size: srcBlobSize}, diffIDIsNeeded, bar)
 	if err != nil {
 		return types.BlobInfo{}, "", err
 	}
+
+	diffID := cachedDiffID
 	if diffIDIsNeeded {
 		select {
 		case <-ctx.Done():
@@ -695,11 +696,12 @@ func (ic *imageCopier) copyLayer(ctx context.Context, srcInfo types.BlobInfo, ba
 			// This is safe because we have just computed diffIDResult.Digest ourselves, and in the process
 			// we have read all of the input blob, so srcInfo.Digest must have been validated by digestingReader.
 			ic.c.blobInfoCache.RecordDigestUncompressedPair(srcInfo.Digest, diffIDResult.digest)
-			return blobInfo, diffIDResult.digest, nil
+			diffID = diffIDResult.digest
 		}
-	} else {
-		return blobInfo, cachedDiffID, nil
 	}
+
+	bar.SetTotal(srcInfo.Size, true)
+	return blobInfo, diffID, nil
 }
 
 // copyLayerFromStream is an implementation detail of copyLayer; mostly providing a separate “defer” scope.
diff --git a/vendor/github.com/containers/image/docker/docker_client.go b/vendor/github.com/containers/image/docker/docker_client.go
index 43eb22ba2..40f11c62a 100644
--- a/vendor/github.com/containers/image/docker/docker_client.go
+++ b/vendor/github.com/containers/image/docker/docker_client.go
@@ -197,7 +197,7 @@ func dockerCertDir(sys *types.SystemContext, hostPort string) (string, error) {
 // “write” specifies whether the client will be used for "write" access (in particular passed to lookaside.go:toplevelFromSection)
 func newDockerClientFromRef(sys *types.SystemContext, ref dockerReference, write bool, actions string) (*dockerClient, error) {
 	registry := reference.Domain(ref.ref)
-	username, password, err := config.GetAuthentication(sys, reference.Domain(ref.ref))
+	username, password, err := config.GetAuthentication(sys, registry)
 	if err != nil {
 		return nil, errors.Wrapf(err, "error getting username and password")
 	}
diff --git a/vendor/github.com/containers/image/docker/docker_image_dest.go b/vendor/github.com/containers/image/docker/docker_image_dest.go
index 38500dd0e..c116cbec3 100644
--- a/vendor/github.com/containers/image/docker/docker_image_dest.go
+++ b/vendor/github.com/containers/image/docker/docker_image_dest.go
@@ -16,7 +16,7 @@ import (
 
 	"github.com/containers/image/docker/reference"
 	"github.com/containers/image/manifest"
-	"github.com/containers/image/pkg/blobinfocache"
+	"github.com/containers/image/pkg/blobinfocache/none"
 	"github.com/containers/image/types"
 	"github.com/docker/distribution/registry/api/errcode"
 	"github.com/docker/distribution/registry/api/v2"
@@ -129,7 +129,7 @@ func (d *dockerImageDestination) PutBlob(ctx context.Context, stream io.Reader,
 		// This should not really be necessary, at least the copy code calls TryReusingBlob automatically.
 		// Still, we need to check, if only because the "initiate upload" endpoint does not have a documented "blob already exists" return value.
 		// But we do that with NoCache, so that it _only_ checks the primary destination, instead of trying all mount candidates _again_.
-		haveBlob, reusedInfo, err := d.TryReusingBlob(ctx, inputInfo, blobinfocache.NoCache, false)
+		haveBlob, reusedInfo, err := d.TryReusingBlob(ctx, inputInfo, none.NoCache, false)
 		if err != nil {
 			return types.BlobInfo{}, err
 		}
diff --git a/vendor/github.com/containers/image/image/docker_schema2.go b/vendor/github.com/containers/image/image/docker_schema2.go
index cee60f824..351e73ea1 100644
--- a/vendor/github.com/containers/image/image/docker_schema2.go
+++ b/vendor/github.com/containers/image/image/docker_schema2.go
@@ -11,7 +11,7 @@ import (
 
 	"github.com/containers/image/docker/reference"
 	"github.com/containers/image/manifest"
-	"github.com/containers/image/pkg/blobinfocache"
+	"github.com/containers/image/pkg/blobinfocache/none"
 	"github.com/containers/image/types"
 	"github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
@@ -96,7 +96,7 @@ func (m *manifestSchema2) ConfigBlob(ctx context.Context) ([]byte, error) {
 		if m.src == nil {
 			return nil, errors.Errorf("Internal error: neither src nor configBlob set in manifestSchema2")
 		}
-		stream, _, err := m.src.GetBlob(ctx, manifest.BlobInfoFromSchema2Descriptor(m.m.ConfigDescriptor), blobinfocache.NoCache)
+		stream, _, err := m.src.GetBlob(ctx, manifest.BlobInfoFromSchema2Descriptor(m.m.ConfigDescriptor), none.NoCache)
 		if err != nil {
 			return nil, err
 		}
@@ -252,7 +252,7 @@ func (m *manifestSchema2) convertToManifestSchema1(ctx context.Context, dest typ
 				logrus.Debugf("Uploading empty layer during conversion to schema 1")
 				// Ideally we should update the relevant BlobInfoCache about this layer, but that would require passing it down here,
 				// and anyway this blob is so small that it’s easier to just copy it than to worry about figuring out another location where to get it.
-				info, err := dest.PutBlob(ctx, bytes.NewReader(GzippedEmptyLayer), types.BlobInfo{Digest: GzippedEmptyLayerDigest, Size: int64(len(GzippedEmptyLayer))}, blobinfocache.NoCache, false)
+				info, err := dest.PutBlob(ctx, bytes.NewReader(GzippedEmptyLayer), types.BlobInfo{Digest: GzippedEmptyLayerDigest, Size: int64(len(GzippedEmptyLayer))}, none.NoCache, false)
 				if err != nil {
 					return nil, errors.Wrap(err, "Error uploading empty layer")
 				}
diff --git a/vendor/github.com/containers/image/image/oci.go b/vendor/github.com/containers/image/image/oci.go
index 6fe2a9a32..cdff26e06 100644
--- a/vendor/github.com/containers/image/image/oci.go
+++ b/vendor/github.com/containers/image/image/oci.go
@@ -7,7 +7,7 @@ import (
 
 	"github.com/containers/image/docker/reference"
 	"github.com/containers/image/manifest"
-	"github.com/containers/image/pkg/blobinfocache"
+	"github.com/containers/image/pkg/blobinfocache/none"
 	"github.com/containers/image/types"
 	"github.com/opencontainers/go-digest"
 	imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
@@ -61,7 +61,7 @@ func (m *manifestOCI1) ConfigBlob(ctx context.Context) ([]byte, error) {
 		if m.src == nil {
 			return nil, errors.Errorf("Internal error: neither src nor configBlob set in manifestOCI1")
 		}
-		stream, _, err := m.src.GetBlob(ctx, manifest.BlobInfoFromOCI1Descriptor(m.m.Config), blobinfocache.NoCache)
+		stream, _, err := m.src.GetBlob(ctx, manifest.BlobInfoFromOCI1Descriptor(m.m.Config), none.NoCache)
 		if err != nil {
 			return nil, err
 		}
diff --git a/vendor/github.com/containers/image/pkg/blobinfocache/boltdb.go b/vendor/github.com/containers/image/pkg/blobinfocache/boltdb/boltdb.go
index 4ee809134..91d4e9137 100644
--- a/vendor/github.com/containers/image/pkg/blobinfocache/boltdb.go
+++ b/vendor/github.com/containers/image/pkg/blobinfocache/boltdb/boltdb.go
@@ -1,4 +1,5 @@
-package blobinfocache
+// Package boltdb implements a BlobInfoCache backed by BoltDB.
+package boltdb
 
 import (
 	"fmt"
@@ -7,6 +8,7 @@ import (
 	"time"
 
 	"github.com/boltdb/bolt"
+	"github.com/containers/image/pkg/blobinfocache/internal/prioritize"
 	"github.com/containers/image/types"
 	"github.com/opencontainers/go-digest"
 	"github.com/sirupsen/logrus"
@@ -81,22 +83,23 @@ func unlockPath(path string) {
 	}
 }
 
-// boltDBCache si a BlobInfoCache implementation which uses a BoltDB file at the specified path.
+// cache is a BlobInfoCache implementation which uses a BoltDB file at the specified path.
 //
 // Note that we don’t keep the database open across operations, because that would lock the file and block any other
 // users; instead, we need to open/close it for every single write or lookup.
-type boltDBCache struct {
+type cache struct {
 	path string
 }
 
-// NewBoltDBCache returns a BlobInfoCache implementation which uses a BoltDB file at path.
-// Most users should call DefaultCache instead.
-func NewBoltDBCache(path string) types.BlobInfoCache {
-	return &boltDBCache{path: path}
+// New returns a BlobInfoCache implementation which uses a BoltDB file at path.
+//
+// Most users should call blobinfocache.DefaultCache instead.
+func New(path string) types.BlobInfoCache {
+	return &cache{path: path}
 }
 
 // view returns runs the specified fn within a read-only transaction on the database.
-func (bdc *boltDBCache) view(fn func(tx *bolt.Tx) error) (retErr error) {
+func (bdc *cache) view(fn func(tx *bolt.Tx) error) (retErr error) {
 	// bolt.Open(bdc.path, 0600, &bolt.Options{ReadOnly: true}) will, if the file does not exist,
 	// nevertheless create it, but with an O_RDONLY file descriptor, try to initialize it, and fail — while holding
 	// a read lock, blocking any future writes.
@@ -122,7 +125,7 @@ func (bdc *boltDBCache) view(fn func(tx *bolt.Tx) error) (retErr error) {
 }
 
 // update returns runs the specified fn within a read-write transaction on the database.
-func (bdc *boltDBCache) update(fn func(tx *bolt.Tx) error) (retErr error) {
+func (bdc *cache) update(fn func(tx *bolt.Tx) error) (retErr error) {
 	lockPath(bdc.path)
 	defer unlockPath(bdc.path)
 	db, err := bolt.Open(bdc.path, 0600, nil)
@@ -139,7 +142,7 @@ func (bdc *boltDBCache) update(fn func(tx *bolt.Tx) error) (retErr error) {
 }
 
 // uncompressedDigest implements BlobInfoCache.UncompressedDigest within the provided read-only transaction.
-func (bdc *boltDBCache) uncompressedDigest(tx *bolt.Tx, anyDigest digest.Digest) digest.Digest {
+func (bdc *cache) uncompressedDigest(tx *bolt.Tx, anyDigest digest.Digest) digest.Digest {
 	if b := tx.Bucket(uncompressedDigestBucket); b != nil {
 		if uncompressedBytes := b.Get([]byte(anyDigest.String())); uncompressedBytes != nil {
 			d, err := digest.Parse(string(uncompressedBytes))
@@ -166,7 +169,7 @@ func (bdc *boltDBCache) uncompressedDigest(tx *bolt.Tx, anyDigest digest.Digest)
 // UncompressedDigest returns an uncompressed digest corresponding to anyDigest.
 // May return anyDigest if it is known to be uncompressed.
 // Returns "" if nothing is known about the digest (it may be compressed or uncompressed).
-func (bdc *boltDBCache) UncompressedDigest(anyDigest digest.Digest) digest.Digest {
+func (bdc *cache) UncompressedDigest(anyDigest digest.Digest) digest.Digest {
 	var res digest.Digest
 	if err := bdc.view(func(tx *bolt.Tx) error {
 		res = bdc.uncompressedDigest(tx, anyDigest)
@@ -182,7 +185,7 @@ func (bdc *boltDBCache) UncompressedDigest(anyDigest digest.Digest) digest.Diges
 // WARNING: Only call this for LOCALLY VERIFIED data; don’t record a digest pair just because some remote author claims so (e.g.
 // because a manifest/config pair exists); otherwise the cache could be poisoned and allow substituting unexpected blobs.
 // (Eventually, the DiffIDs in image config could detect the substitution, but that may be too late, and not all image formats contain that data.)
-func (bdc *boltDBCache) RecordDigestUncompressedPair(anyDigest digest.Digest, uncompressed digest.Digest) {
+func (bdc *cache) RecordDigestUncompressedPair(anyDigest digest.Digest, uncompressed digest.Digest) {
 	_ = bdc.update(func(tx *bolt.Tx) error {
 		b, err := tx.CreateBucketIfNotExists(uncompressedDigestBucket)
 		if err != nil {
@@ -219,7 +222,7 @@ func (bdc *boltDBCache) RecordDigestUncompressedPair(anyDigest digest.Digest, un
 
 // RecordKnownLocation records that a blob with the specified digest exists within the specified (transport, scope) scope,
 // and can be reused given the opaque location data.
-func (bdc *boltDBCache) RecordKnownLocation(transport types.ImageTransport, scope types.BICTransportScope, blobDigest digest.Digest, location types.BICLocationReference) {
+func (bdc *cache) RecordKnownLocation(transport types.ImageTransport, scope types.BICTransportScope, blobDigest digest.Digest, location types.BICLocationReference) {
 	_ = bdc.update(func(tx *bolt.Tx) error {
 		b, err := tx.CreateBucketIfNotExists(knownLocationsBucket)
 		if err != nil {
@@ -248,8 +251,8 @@ func (bdc *boltDBCache) RecordKnownLocation(transport types.ImageTransport, scop
 	}) // FIXME? Log error (but throttle the log volume on repeated accesses)?
 }
 
-// appendReplacementCandiates creates candidateWithTime values for digest in scopeBucket, and returns the result of appending them to candidates.
-func (bdc *boltDBCache) appendReplacementCandidates(candidates []candidateWithTime, scopeBucket *bolt.Bucket, digest digest.Digest) []candidateWithTime {
+// appendReplacementCandiates creates prioritize.CandidateWithTime values for digest in scopeBucket, and returns the result of appending them to candidates.
+func (bdc *cache) appendReplacementCandidates(candidates []prioritize.CandidateWithTime, scopeBucket *bolt.Bucket, digest digest.Digest) []prioritize.CandidateWithTime {
 	b := scopeBucket.Bucket([]byte(digest.String()))
 	if b == nil {
 		return candidates
@@ -259,12 +262,12 @@ func (bdc *boltDBCache) appendReplacementCandidates(candidates []candidateWithTi
 		if err := t.UnmarshalBinary(v); err != nil {
 			return err
 		}
-		candidates = append(candidates, candidateWithTime{
-			candidate: types.BICReplacementCandidate{
+		candidates = append(candidates, prioritize.CandidateWithTime{
+			Candidate: types.BICReplacementCandidate{
 				Digest:   digest,
 				Location: types.BICLocationReference{Opaque: string(k)},
 			},
-			lastSeen: t,
+			LastSeen: t,
 		})
 		return nil
 	}) // FIXME? Log error (but throttle the log volume on repeated accesses)?
@@ -277,8 +280,8 @@ func (bdc *boltDBCache) appendReplacementCandidates(candidates []candidateWithTi
 // If !canSubstitute, the returned cadidates will match the submitted digest exactly; if canSubstitute,
 // data from previous RecordDigestUncompressedPair calls is used to also look up variants of the blob which have the same
 // uncompressed digest.
-func (bdc *boltDBCache) CandidateLocations(transport types.ImageTransport, scope types.BICTransportScope, primaryDigest digest.Digest, canSubstitute bool) []types.BICReplacementCandidate {
-	res := []candidateWithTime{}
+func (bdc *cache) CandidateLocations(transport types.ImageTransport, scope types.BICTransportScope, primaryDigest digest.Digest, canSubstitute bool) []types.BICReplacementCandidate {
+	res := []prioritize.CandidateWithTime{}
 	var uncompressedDigestValue digest.Digest // = ""
 	if err := bdc.view(func(tx *bolt.Tx) error {
 		scopeBucket := tx.Bucket(knownLocationsBucket)
@@ -325,5 +328,5 @@ func (bdc *boltDBCache) CandidateLocations(transport types.ImageTransport, scope
 		return []types.BICReplacementCandidate{} // FIXME? Log err (but throttle the log volume on repeated accesses)?
 	}
 
-	return destructivelyPrioritizeReplacementCandidates(res, primaryDigest, uncompressedDigestValue)
+	return prioritize.DestructivelyPrioritizeReplacementCandidates(res, primaryDigest, uncompressedDigestValue)
 }
diff --git a/vendor/github.com/containers/image/pkg/blobinfocache/default.go b/vendor/github.com/containers/image/pkg/blobinfocache/default.go
index 459ae5c06..1e6e543b2 100644
--- a/vendor/github.com/containers/image/pkg/blobinfocache/default.go
+++ b/vendor/github.com/containers/image/pkg/blobinfocache/default.go
@@ -5,6 +5,8 @@ import (
 	"os"
 	"path/filepath"
 
+	"github.com/containers/image/pkg/blobinfocache/boltdb"
+	"github.com/containers/image/pkg/blobinfocache/memory"
 	"github.com/containers/image/types"
 	"github.com/sirupsen/logrus"
 )
@@ -50,14 +52,14 @@ func DefaultCache(sys *types.SystemContext) types.BlobInfoCache {
 	dir, err := blobInfoCacheDir(sys, os.Geteuid())
 	if err != nil {
 		logrus.Debugf("Error determining a location for %s, using a memory-only cache", blobInfoCacheFilename)
-		return NewMemoryCache()
+		return memory.New()
 	}
 	path := filepath.Join(dir, blobInfoCacheFilename)
 	if err := os.MkdirAll(dir, 0700); err != nil {
 		logrus.Debugf("Error creating parent directories for %s, using a memory-only cache: %v", blobInfoCacheFilename, err)
-		return NewMemoryCache()
+		return memory.New()
 	}
 
 	logrus.Debugf("Using blob info cache at %s", path)
-	return NewBoltDBCache(path)
+	return boltdb.New(path)
 }
diff --git a/vendor/github.com/containers/image/pkg/blobinfocache/prioritize.go b/vendor/github.com/containers/image/pkg/blobinfocache/internal/prioritize/prioritize.go
index 02709aa1c..5479319de 100644
--- a/vendor/github.com/containers/image/pkg/blobinfocache/prioritize.go
+++ b/vendor/github.com/containers/image/pkg/blobinfocache/internal/prioritize/prioritize.go
@@ -1,4 +1,6 @@
-package blobinfocache
+// Package prioritize provides utilities for prioritizing locations in
+// types.BlobInfoCache.CandidateLocations.
+package prioritize
 
 import (
 	"sort"
@@ -13,16 +15,16 @@ import (
 // This is a heuristic/guess, and could well use a different value.
 const replacementAttempts = 5
 
-// candidateWithTime is the input to types.BICReplacementCandidate prioritization.
-type candidateWithTime struct {
-	candidate types.BICReplacementCandidate // The replacement candidate
-	lastSeen  time.Time                     // Time the candidate was last known to exist (either read or written)
+// CandidateWithTime is the input to types.BICReplacementCandidate prioritization.
+type CandidateWithTime struct {
+	Candidate types.BICReplacementCandidate // The replacement candidate
+	LastSeen  time.Time                     // Time the candidate was last known to exist (either read or written)
 }
 
 // candidateSortState is a local state implementing sort.Interface on candidates to prioritize,
 // along with the specially-treated digest values for the implementation of sort.Interface.Less
 type candidateSortState struct {
-	cs                 []candidateWithTime // The entries to sort
+	cs                 []CandidateWithTime // The entries to sort
 	primaryDigest      digest.Digest       // The digest the user actually asked for
 	uncompressedDigest digest.Digest       // The uncompressed digest corresponding to primaryDigest. May be "", or even equal to primaryDigest
 }
@@ -40,35 +42,35 @@ func (css *candidateSortState) Less(i, j int) bool {
 	// Other digest values are primarily sorted by time (more recent first), secondarily by digest (to provide a deterministic order)
 
 	// First, deal with the primaryDigest/uncompressedDigest cases:
-	if xi.candidate.Digest != xj.candidate.Digest {
+	if xi.Candidate.Digest != xj.Candidate.Digest {
 		// - The two digests are different, and one (or both) of the digests is primaryDigest or uncompressedDigest: time does not matter
-		if xi.candidate.Digest == css.primaryDigest {
+		if xi.Candidate.Digest == css.primaryDigest {
 			return true
 		}
-		if xj.candidate.Digest == css.primaryDigest {
+		if xj.Candidate.Digest == css.primaryDigest {
 			return false
 		}
 		if css.uncompressedDigest != "" {
-			if xi.candidate.Digest == css.uncompressedDigest {
+			if xi.Candidate.Digest == css.uncompressedDigest {
 				return false
 			}
-			if xj.candidate.Digest == css.uncompressedDigest {
+			if xj.Candidate.Digest == css.uncompressedDigest {
 				return true
 			}
 		}
-	} else { // xi.candidate.Digest == xj.candidate.Digest
+	} else { // xi.Candidate.Digest == xj.Candidate.Digest
 		// The two digests are the same, and are either primaryDigest or uncompressedDigest: order by time
-		if xi.candidate.Digest == css.primaryDigest || (css.uncompressedDigest != "" && xi.candidate.Digest == css.uncompressedDigest) {
-			return xi.lastSeen.After(xj.lastSeen)
+		if xi.Candidate.Digest == css.primaryDigest || (css.uncompressedDigest != "" && xi.Candidate.Digest == css.uncompressedDigest) {
+			return xi.LastSeen.After(xj.LastSeen)
 		}
 	}
 
 	// Neither of the digests are primaryDigest/uncompressedDigest:
-	if !xi.lastSeen.Equal(xj.lastSeen) { // Order primarily by time
-		return xi.lastSeen.After(xj.lastSeen)
+	if !xi.LastSeen.Equal(xj.LastSeen) { // Order primarily by time
+		return xi.LastSeen.After(xj.LastSeen)
 	}
 	// Fall back to digest, if timestamps end up _exactly_ the same (how?!)
-	return xi.candidate.Digest < xj.candidate.Digest
+	return xi.Candidate.Digest < xj.Candidate.Digest
 }
 
 func (css *candidateSortState) Swap(i, j int) {
@@ -77,7 +79,7 @@ func (css *candidateSortState) Swap(i, j int) {
 
 // destructivelyPrioritizeReplacementCandidatesWithMax is destructivelyPrioritizeReplacementCandidates with a parameter for the
 // number of entries to limit, only to make testing simpler.
-func destructivelyPrioritizeReplacementCandidatesWithMax(cs []candidateWithTime, primaryDigest, uncompressedDigest digest.Digest, maxCandidates int) []types.BICReplacementCandidate {
+func destructivelyPrioritizeReplacementCandidatesWithMax(cs []CandidateWithTime, primaryDigest, uncompressedDigest digest.Digest, maxCandidates int) []types.BICReplacementCandidate {
 	// We don't need to use sort.Stable() because nanosecond timestamps are (presumably?) unique, so no two elements should
 	// compare equal.
 	sort.Sort(&candidateSortState{
@@ -92,17 +94,17 @@ func destructivelyPrioritizeReplacementCandidatesWithMax(cs []candidateWithTime,
 	}
 	res := make([]types.BICReplacementCandidate, resLength)
 	for i := range res {
-		res[i] = cs[i].candidate
+		res[i] = cs[i].Candidate
 	}
 	return res
 }
 
-// destructivelyPrioritizeReplacementCandidates consumes AND DESTROYS an array of possible replacement candidates with their last known existence times,
+// DestructivelyPrioritizeReplacementCandidates consumes AND DESTROYS an array of possible replacement candidates with their last known existence times,
 // the primary digest the user actually asked for, and the corresponding uncompressed digest (if known, possibly equal to the primary digest),
 // and returns an appropriately prioritized and/or trimmed result suitable for a return value from types.BlobInfoCache.CandidateLocations.
 //
 // WARNING: The array of candidates is destructively modified. (The implementation of this function could of course
 // make a copy, but all CandidateLocations implementations build the slice of candidates only for the single purpose of calling this function anyway.)
-func destructivelyPrioritizeReplacementCandidates(cs []candidateWithTime, primaryDigest, uncompressedDigest digest.Digest) []types.BICReplacementCandidate {
+func DestructivelyPrioritizeReplacementCandidates(cs []CandidateWithTime, primaryDigest, uncompressedDigest digest.Digest) []types.BICReplacementCandidate {
 	return destructivelyPrioritizeReplacementCandidatesWithMax(cs, primaryDigest, uncompressedDigest, replacementAttempts)
 }
diff --git a/vendor/github.com/containers/image/pkg/blobinfocache/memory.go b/vendor/github.com/containers/image/pkg/blobinfocache/memory/memory.go
index cf6ca5263..dfb338634 100644
--- a/vendor/github.com/containers/image/pkg/blobinfocache/memory.go
+++ b/vendor/github.com/containers/image/pkg/blobinfocache/memory/memory.go
@@ -1,11 +1,13 @@
-package blobinfocache
+// Package memory implements an in-memory BlobInfoCache.
+package memory
 
 import (
 	"sync"
 	"time"
 
+	"github.com/containers/image/pkg/blobinfocache/internal/prioritize"
 	"github.com/containers/image/types"
-	"github.com/opencontainers/go-digest"
+	digest "github.com/opencontainers/go-digest"
 	"github.com/sirupsen/logrus"
 )
 
@@ -16,21 +18,25 @@ type locationKey struct {
 	blobDigest digest.Digest
 }
 
-// memoryCache implements an in-memory-only BlobInfoCache
-type memoryCache struct {
-	mutex                 *sync.Mutex // synchronizes concurrent accesses
+// cache implements an in-memory-only BlobInfoCache
+type cache struct {
+	mutex sync.Mutex
+	// The following fields can only be accessed with mutex held.
 	uncompressedDigests   map[digest.Digest]digest.Digest
 	digestsByUncompressed map[digest.Digest]map[digest.Digest]struct{}             // stores a set of digests for each uncompressed digest
 	knownLocations        map[locationKey]map[types.BICLocationReference]time.Time // stores last known existence time for each location reference
 }
 
-// NewMemoryCache returns a BlobInfoCache implementation which is in-memory only.
-// This is primarily intended for tests, but also used as a fallback if DefaultCache
-// can’t determine, or set up, the location for a persistent cache.
-// Manual users of types.{ImageSource,ImageDestination} might also use this instead of a persistent cache.
-func NewMemoryCache() types.BlobInfoCache {
-	return &memoryCache{
-		mutex:                 new(sync.Mutex),
+// New returns a BlobInfoCache implementation which is in-memory only.
+//
+// This is primarily intended for tests, but also used as a fallback
+// if blobinfocache.DefaultCache can’t determine, or set up, the
+// location for a persistent cache.  Most users should use
+// blobinfocache.DefaultCache. instead of calling this directly.
+// Manual users of types.{ImageSource,ImageDestination} might also use
+// this instead of a persistent cache.
+func New() types.BlobInfoCache {
+	return &cache{
 		uncompressedDigests:   map[digest.Digest]digest.Digest{},
 		digestsByUncompressed: map[digest.Digest]map[digest.Digest]struct{}{},
 		knownLocations:        map[locationKey]map[types.BICLocationReference]time.Time{},
@@ -40,16 +46,14 @@ func NewMemoryCache() types.BlobInfoCache {
 // UncompressedDigest returns an uncompressed digest corresponding to anyDigest.
 // May return anyDigest if it is known to be uncompressed.
 // Returns "" if nothing is known about the digest (it may be compressed or uncompressed).
-func (mem *memoryCache) UncompressedDigest(anyDigest digest.Digest) digest.Digest {
+func (mem *cache) UncompressedDigest(anyDigest digest.Digest) digest.Digest {
 	mem.mutex.Lock()
 	defer mem.mutex.Unlock()
-	return mem.uncompressedDigest(anyDigest)
+	return mem.uncompressedDigestLocked(anyDigest)
 }
 
-// uncompressedDigest returns an uncompressed digest corresponding to anyDigest.
-// May return anyDigest if it is known to be uncompressed.
-// Returns "" if nothing is known about the digest (it may be compressed or uncompressed).
-func (mem *memoryCache) uncompressedDigest(anyDigest digest.Digest) digest.Digest {
+// uncompressedDigestLocked implements types.BlobInfoCache.UncompressedDigest, but must be called only with mem.mutex held.
+func (mem *cache) uncompressedDigestLocked(anyDigest digest.Digest) digest.Digest {
 	if d, ok := mem.uncompressedDigests[anyDigest]; ok {
 		return d
 	}
@@ -67,7 +71,7 @@ func (mem *memoryCache) uncompressedDigest(anyDigest digest.Digest) digest.Diges
 // WARNING: Only call this for LOCALLY VERIFIED data; don’t record a digest pair just because some remote author claims so (e.g.
 // because a manifest/config pair exists); otherwise the cache could be poisoned and allow substituting unexpected blobs.
 // (Eventually, the DiffIDs in image config could detect the substitution, but that may be too late, and not all image formats contain that data.)
-func (mem *memoryCache) RecordDigestUncompressedPair(anyDigest digest.Digest, uncompressed digest.Digest) {
+func (mem *cache) RecordDigestUncompressedPair(anyDigest digest.Digest, uncompressed digest.Digest) {
 	mem.mutex.Lock()
 	defer mem.mutex.Unlock()
 	if previous, ok := mem.uncompressedDigests[anyDigest]; ok && previous != uncompressed {
@@ -85,7 +89,7 @@ func (mem *memoryCache) RecordDigestUncompressedPair(anyDigest digest.Digest, un
 
 // RecordKnownLocation records that a blob with the specified digest exists within the specified (transport, scope) scope,
 // and can be reused given the opaque location data.
-func (mem *memoryCache) RecordKnownLocation(transport types.ImageTransport, scope types.BICTransportScope, blobDigest digest.Digest, location types.BICLocationReference) {
+func (mem *cache) RecordKnownLocation(transport types.ImageTransport, scope types.BICTransportScope, blobDigest digest.Digest, location types.BICLocationReference) {
 	mem.mutex.Lock()
 	defer mem.mutex.Unlock()
 	key := locationKey{transport: transport.Name(), scope: scope, blobDigest: blobDigest}
@@ -97,16 +101,16 @@ func (mem *memoryCache) RecordKnownLocation(transport types.ImageTransport, scop
 	locationScope[location] = time.Now() // Possibly overwriting an older entry.
 }
 
-// appendReplacementCandiates creates candidateWithTime values for (transport, scope, digest), and returns the result of appending them to candidates.
-func (mem *memoryCache) appendReplacementCandidates(candidates []candidateWithTime, transport types.ImageTransport, scope types.BICTransportScope, digest digest.Digest) []candidateWithTime {
+// appendReplacementCandiates creates prioritize.CandidateWithTime values for (transport, scope, digest), and returns the result of appending them to candidates.
+func (mem *cache) appendReplacementCandidates(candidates []prioritize.CandidateWithTime, transport types.ImageTransport, scope types.BICTransportScope, digest digest.Digest) []prioritize.CandidateWithTime {
 	locations := mem.knownLocations[locationKey{transport: transport.Name(), scope: scope, blobDigest: digest}] // nil if not present
 	for l, t := range locations {
-		candidates = append(candidates, candidateWithTime{
-			candidate: types.BICReplacementCandidate{
+		candidates = append(candidates, prioritize.CandidateWithTime{
+			Candidate: types.BICReplacementCandidate{
 				Digest:   digest,
 				Location: l,
 			},
-			lastSeen: t,
+			LastSeen: t,
 		})
 	}
 	return candidates
@@ -118,14 +122,14 @@ func (mem *memoryCache) appendReplacementCandidates(candidates []candidateWithTi
 // If !canSubstitute, the returned cadidates will match the submitted digest exactly; if canSubstitute,
 // data from previous RecordDigestUncompressedPair calls is used to also look up variants of the blob which have the same
 // uncompressed digest.
-func (mem *memoryCache) CandidateLocations(transport types.ImageTransport, scope types.BICTransportScope, primaryDigest digest.Digest, canSubstitute bool) []types.BICReplacementCandidate {
+func (mem *cache) CandidateLocations(transport types.ImageTransport, scope types.BICTransportScope, primaryDigest digest.Digest, canSubstitute bool) []types.BICReplacementCandidate {
 	mem.mutex.Lock()
 	defer mem.mutex.Unlock()
-	res := []candidateWithTime{}
+	res := []prioritize.CandidateWithTime{}
 	res = mem.appendReplacementCandidates(res, transport, scope, primaryDigest)
 	var uncompressedDigest digest.Digest // = ""
 	if canSubstitute {
-		if uncompressedDigest = mem.uncompressedDigest(primaryDigest); uncompressedDigest != "" {
+		if uncompressedDigest = mem.uncompressedDigestLocked(primaryDigest); uncompressedDigest != "" {
 			otherDigests := mem.digestsByUncompressed[uncompressedDigest] // nil if not present in the map
 			for d := range otherDigests {
 				if d != primaryDigest && d != uncompressedDigest {
@@ -137,5 +141,5 @@ func (mem *memoryCache) CandidateLocations(transport types.ImageTransport, scope
 			}
 		}
 	}
-	return destructivelyPrioritizeReplacementCandidates(res, primaryDigest, uncompressedDigest)
+	return prioritize.DestructivelyPrioritizeReplacementCandidates(res, primaryDigest, uncompressedDigest)
 }
diff --git a/vendor/github.com/containers/image/pkg/blobinfocache/none.go b/vendor/github.com/containers/image/pkg/blobinfocache/none/none.go
index 5658d89ff..e5dca25ce 100644
--- a/vendor/github.com/containers/image/pkg/blobinfocache/none.go
+++ b/vendor/github.com/containers/image/pkg/blobinfocache/none/none.go
@@ -1,4 +1,5 @@
-package blobinfocache
+// Package none implements a dummy BlobInfoCache which records no data.
+package none
 
 import (
 	"github.com/containers/image/types"
@@ -11,9 +12,10 @@ type noCache struct {
 
 // NoCache implements BlobInfoCache by not recording any data.
 //
-// This exists primarily for implementations of configGetter for Manifest.Inspect,
-// because configs only have one representation.
-// Any use of BlobInfoCache with blobs should usually use at least a short-lived cache.
+// This exists primarily for implementations of configGetter for
+// Manifest.Inspect, because configs only have one representation.
+// Any use of BlobInfoCache with blobs should usually use at least a
+// short-lived cache, ideally blobinfocache.DefaultCache.
 var NoCache types.BlobInfoCache = noCache{}
 
 // UncompressedDigest returns an uncompressed digest corresponding to anyDigest.
diff --git a/vendor/github.com/containers/image/signature/policy_config.go b/vendor/github.com/containers/image/signature/policy_config.go
index 39c0f2a55..12398e385 100644
--- a/vendor/github.com/containers/image/signature/policy_config.go
+++ b/vendor/github.com/containers/image/signature/policy_config.go
@@ -30,7 +30,7 @@ import (
 // -ldflags '-X github.com/containers/image/signature.systemDefaultPolicyPath=$your_path'
 var systemDefaultPolicyPath = builtinDefaultPolicyPath
 
-// builtinDefaultPolicyPath is the policy pat used for DefaultPolicy().
+// builtinDefaultPolicyPath is the policy path used for DefaultPolicy().
 // DO NOT change this, instead see systemDefaultPolicyPath above.
 const builtinDefaultPolicyPath = "/etc/containers/policy.json"
 
diff --git a/vendor/github.com/containers/image/storage/storage_image.go b/vendor/github.com/containers/image/storage/storage_image.go
index 67dc6142b..b39d2bcc0 100644
--- a/vendor/github.com/containers/image/storage/storage_image.go
+++ b/vendor/github.com/containers/image/storage/storage_image.go
@@ -18,7 +18,7 @@ import (
 	"github.com/containers/image/image"
 	"github.com/containers/image/internal/tmpdir"
 	"github.com/containers/image/manifest"
-	"github.com/containers/image/pkg/blobinfocache"
+	"github.com/containers/image/pkg/blobinfocache/none"
 	"github.com/containers/image/types"
 	"github.com/containers/storage"
 	"github.com/containers/storage/pkg/archive"
@@ -595,12 +595,12 @@ func (s *storageImageDestination) Commit(ctx context.Context) error {
 		if !haveDiffID {
 			// Check if it's elsewhere and the caller just forgot to pass it to us in a PutBlob(),
 			// or to even check if we had it.
-			// Use blobinfocache.NoCache to avoid a repeated DiffID lookup in the BlobInfoCache; a caller
+			// Use none.NoCache to avoid a repeated DiffID lookup in the BlobInfoCache; a caller
 			// that relies on using a blob digest that has never been seeen by the store had better call
 			// TryReusingBlob; not calling PutBlob already violates the documented API, so there’s only
 			// so far we are going to accommodate that (if we should be doing that at all).
 			logrus.Debugf("looking for diffID for blob %+v", blob.Digest)
-			has, _, err := s.TryReusingBlob(ctx, blob.BlobInfo, blobinfocache.NoCache, false)
+			has, _, err := s.TryReusingBlob(ctx, blob.BlobInfo, none.NoCache, false)
 			if err != nil {
 				return errors.Wrapf(err, "error checking for a layer based on blob %q", blob.Digest.String())
 			}
@@ -732,7 +732,7 @@ func (s *storageImageDestination) Commit(ctx context.Context) error {
 		if err != nil {
 			return errors.Wrapf(err, "error copying non-layer blob %q to image", blob)
 		}
-		if err := s.imageRef.transport.store.SetImageBigData(img.ID, blob.String(), v); err != nil {
+		if err := s.imageRef.transport.store.SetImageBigData(img.ID, blob.String(), v, manifest.Digest); err != nil {
 			if _, err2 := s.imageRef.transport.store.DeleteImage(img.ID, true); err2 != nil {
 				logrus.Debugf("error deleting incomplete image %q: %v", img.ID, err2)
 			}
@@ -765,14 +765,14 @@ func (s *storageImageDestination) Commit(ctx context.Context) error {
 	if err != nil {
 		return errors.Wrapf(err, "error computing manifest digest")
 	}
-	if err := s.imageRef.transport.store.SetImageBigData(img.ID, manifestBigDataKey(manifestDigest), s.manifest); err != nil {
+	if err := s.imageRef.transport.store.SetImageBigData(img.ID, manifestBigDataKey(manifestDigest), s.manifest, manifest.Digest); err != nil {
 		if _, err2 := s.imageRef.transport.store.DeleteImage(img.ID, true); err2 != nil {
 			logrus.Debugf("error deleting incomplete image %q: %v", img.ID, err2)
 		}
 		logrus.Debugf("error saving manifest for image %q: %v", img.ID, err)
 		return err
 	}
-	if err := s.imageRef.transport.store.SetImageBigData(img.ID, storage.ImageDigestBigDataKey, s.manifest); err != nil {
+	if err := s.imageRef.transport.store.SetImageBigData(img.ID, storage.ImageDigestBigDataKey, s.manifest, manifest.Digest); err != nil {
 		if _, err2 := s.imageRef.transport.store.DeleteImage(img.ID, true); err2 != nil {
 			logrus.Debugf("error deleting incomplete image %q: %v", img.ID, err2)
 		}
@@ -781,7 +781,7 @@ func (s *storageImageDestination) Commit(ctx context.Context) error {
 	}
 	// Save the signatures, if we have any.
 	if len(s.signatures) > 0 {
-		if err := s.imageRef.transport.store.SetImageBigData(img.ID, "signatures", s.signatures); err != nil {
+		if err := s.imageRef.transport.store.SetImageBigData(img.ID, "signatures", s.signatures, manifest.Digest); err != nil {
 			if _, err2 := s.imageRef.transport.store.DeleteImage(img.ID, true); err2 != nil {
 				logrus.Debugf("error deleting incomplete image %q: %v", img.ID, err2)
 			}
diff --git a/vendor/github.com/containers/image/storage/storage_transport.go b/vendor/github.com/containers/image/storage/storage_transport.go
index 02d2f5c08..3a6be6e00 100644
--- a/vendor/github.com/containers/image/storage/storage_transport.go
+++ b/vendor/github.com/containers/image/storage/storage_transport.go
@@ -4,6 +4,7 @@ package storage
 
 import (
 	"fmt"
+	"os"
 	"path/filepath"
 	"strings"
 
@@ -180,7 +181,10 @@ func (s *storageTransport) GetStore() (storage.Store, error) {
 	// Return the transport's previously-set store.  If we don't have one
 	// of those, initialize one now.
 	if s.store == nil {
-		options := storage.DefaultStoreOptions
+		options, err := storage.DefaultStoreOptions(os.Getuid() != 0, os.Getuid())
+		if err != nil {
+			return nil, err
+		}
 		options.UIDMap = s.defaultUIDMap
 		options.GIDMap = s.defaultGIDMap
 		store, err := storage.GetStore(options)
diff --git a/vendor/github.com/containers/image/vendor.conf b/vendor/github.com/containers/image/vendor.conf
index 1c5b6b378..89b29722b 100644
--- a/vendor/github.com/containers/image/vendor.conf
+++ b/vendor/github.com/containers/image/vendor.conf
@@ -1,7 +1,7 @@
 github.com/containers/image
 
 github.com/sirupsen/logrus v1.0.0
-github.com/containers/storage master
+github.com/containers/storage v1.12.1
 github.com/davecgh/go-spew 346938d642f2ec3594ed81d874461961cd0faa76
 github.com/docker/docker-credential-helpers d68f9aeca33f5fd3f08eeae5e9d175edf4e731d1
 github.com/docker/distribution 5f6282db7d65e6d72ad7c2cc66310724a57be716
diff --git a/vendor/github.com/containers/image/version/version.go b/vendor/github.com/containers/image/version/version.go
index 2a3bc1b5c..9915cb2fa 100644
--- a/vendor/github.com/containers/image/version/version.go
+++ b/vendor/github.com/containers/image/version/version.go
@@ -8,10 +8,10 @@ const (
 	// VersionMinor is for functionality in a backwards-compatible manner
 	VersionMinor = 1
 	// VersionPatch is for backwards-compatible bug fixes
-	VersionPatch = 5
+	VersionPatch = 6
 
 	// VersionDev indicates development branch. Releases will be empty string.
-	VersionDev = ""
+	VersionDev = "-dev"
 )
 
 // Version is the specification version that the package types support.
diff --git a/vendor/github.com/containers/storage/containers.go b/vendor/github.com/containers/storage/containers.go
index 10d628dbe..bbac78b60 100644
--- a/vendor/github.com/containers/storage/containers.go
+++ b/vendor/github.com/containers/storage/containers.go
@@ -71,7 +71,7 @@ type Container struct {
 type ContainerStore interface {
 	FileBasedStore
 	MetadataStore
-	BigDataStore
+	ContainerBigDataStore
 	FlaggableStore
 
 	// Create creates a container that has a specified ID (or generates a
@@ -456,7 +456,7 @@ func (r *containerStore) BigDataSize(id, key string) (int64, error) {
 		return size, nil
 	}
 	if data, err := r.BigData(id, key); err == nil && data != nil {
-		if r.SetBigData(id, key, data) == nil {
+		if err = r.SetBigData(id, key, data); err == nil {
 			c, ok := r.lookup(id)
 			if !ok {
 				return -1, ErrContainerUnknown
@@ -464,6 +464,8 @@ func (r *containerStore) BigDataSize(id, key string) (int64, error) {
 			if size, ok := c.BigDataSizes[key]; ok {
 				return size, nil
 			}
+		} else {
+			return -1, err
 		}
 	}
 	return -1, ErrSizeUnknown
@@ -484,7 +486,7 @@ func (r *containerStore) BigDataDigest(id, key string) (digest.Digest, error) {
 		return d, nil
 	}
 	if data, err := r.BigData(id, key); err == nil && data != nil {
-		if r.SetBigData(id, key, data) == nil {
+		if err = r.SetBigData(id, key, data); err == nil {
 			c, ok := r.lookup(id)
 			if !ok {
 				return "", ErrContainerUnknown
@@ -492,6 +494,8 @@ func (r *containerStore) BigDataDigest(id, key string) (digest.Digest, error) {
 			if d, ok := c.BigDataDigests[key]; ok {
 				return d, nil
 			}
+		} else {
+			return "", err
 		}
 	}
 	return "", ErrDigestUnknown
diff --git a/vendor/github.com/containers/storage/containers_ffjson.go b/vendor/github.com/containers/storage/containers_ffjson.go
index aef6becfe..40b912bb3 100644
--- a/vendor/github.com/containers/storage/containers_ffjson.go
+++ b/vendor/github.com/containers/storage/containers_ffjson.go
@@ -1,5 +1,5 @@
 // Code generated by ffjson <https://github.com/pquerna/ffjson>. DO NOT EDIT.
-// source: containers.go
+// source: ./containers.go
 
 package storage
 
diff --git a/vendor/github.com/containers/storage/drivers/copy/copy.go b/vendor/github.com/containers/storage/drivers/copy/copy.go
index 2617824c5..bcbc61284 100644
--- a/vendor/github.com/containers/storage/drivers/copy/copy.go
+++ b/vendor/github.com/containers/storage/drivers/copy/copy.go
@@ -19,6 +19,7 @@ import (
 	"syscall"
 	"time"
 
+	"github.com/containers/storage/pkg/idtools"
 	"github.com/containers/storage/pkg/pools"
 	"github.com/containers/storage/pkg/system"
 	rsystem "github.com/opencontainers/runc/libcontainer/system"
@@ -212,7 +213,7 @@ func DirCopy(srcDir, dstDir string, copyMode Mode, copyXattrs bool) error {
 			return nil
 		}
 
-		if err := os.Lchown(dstPath, int(stat.Uid), int(stat.Gid)); err != nil {
+		if err := idtools.SafeLchown(dstPath, int(stat.Uid), int(stat.Gid)); err != nil {
 			return err
 		}
 
diff --git a/vendor/github.com/containers/storage/images.go b/vendor/github.com/containers/storage/images.go
index 93505f5fb..38b5a3ef3 100644
--- a/vendor/github.com/containers/storage/images.go
+++ b/vendor/github.com/containers/storage/images.go
@@ -8,7 +8,6 @@ import (
 	"strings"
 	"time"
 
-	"github.com/containers/image/manifest"
 	"github.com/containers/storage/pkg/ioutils"
 	"github.com/containers/storage/pkg/stringid"
 	"github.com/containers/storage/pkg/truncindex"
@@ -117,7 +116,7 @@ type ImageStore interface {
 	ROImageStore
 	RWFileBasedStore
 	RWMetadataStore
-	RWBigDataStore
+	RWImageBigDataStore
 	FlaggableStore
 
 	// Create creates an image that has a specified ID (or a random one) and
@@ -272,7 +271,7 @@ func (r *imageStore) Load() error {
 			}
 		}
 	}
-	if shouldSave && !r.IsReadWrite() {
+	if shouldSave && (!r.IsReadWrite() || !r.Locked()) {
 		return ErrDuplicateImageNames
 	}
 	r.images = images
@@ -291,7 +290,7 @@ func (r *imageStore) Save() error {
 		return errors.Wrapf(ErrStoreIsReadOnly, "not allowed to modify the image store at %q", r.imagespath())
 	}
 	if !r.Locked() {
-		return errors.New("image store is not locked")
+		return errors.New("image store is not locked for writing")
 	}
 	rpath := r.imagespath()
 	if err := os.MkdirAll(filepath.Dir(rpath), 0700); err != nil {
@@ -595,15 +594,7 @@ func (r *imageStore) BigDataSize(id, key string) (int64, error) {
 		return size, nil
 	}
 	if data, err := r.BigData(id, key); err == nil && data != nil {
-		if r.SetBigData(id, key, data) == nil {
-			image, ok := r.lookup(id)
-			if !ok {
-				return -1, ErrImageUnknown
-			}
-			if size, ok := image.BigDataSizes[key]; ok {
-				return size, nil
-			}
-		}
+		return int64(len(data)), nil
 	}
 	return -1, ErrSizeUnknown
 }
@@ -622,17 +613,6 @@ func (r *imageStore) BigDataDigest(id, key string) (digest.Digest, error) {
 	if d, ok := image.BigDataDigests[key]; ok {
 		return d, nil
 	}
-	if data, err := r.BigData(id, key); err == nil && data != nil {
-		if r.SetBigData(id, key, data) == nil {
-			image, ok := r.lookup(id)
-			if !ok {
-				return "", ErrImageUnknown
-			}
-			if d, ok := image.BigDataDigests[key]; ok {
-				return d, nil
-			}
-		}
-	}
 	return "", ErrDigestUnknown
 }
 
@@ -655,7 +635,7 @@ func imageSliceWithoutValue(slice []*Image, value *Image) []*Image {
 	return modified
 }
 
-func (r *imageStore) SetBigData(id, key string, data []byte) error {
+func (r *imageStore) SetBigData(id, key string, data []byte, digestManifest func([]byte) (digest.Digest, error)) error {
 	if key == "" {
 		return errors.Wrapf(ErrInvalidBigDataName, "can't set empty name for image big data item")
 	}
@@ -672,7 +652,10 @@ func (r *imageStore) SetBigData(id, key string, data []byte) error {
 	}
 	var newDigest digest.Digest
 	if bigDataNameIsManifest(key) {
-		if newDigest, err = manifest.Digest(data); err != nil {
+		if digestManifest == nil {
+			return errors.Wrapf(ErrDigestUnknown, "error digesting manifest: no manifest digest callback provided")
+		}
+		if newDigest, err = digestManifest(data); err != nil {
 			return errors.Wrapf(err, "error digesting manifest")
 		}
 	} else {
diff --git a/vendor/github.com/containers/storage/images_ffjson.go b/vendor/github.com/containers/storage/images_ffjson.go
index 6b40ebd59..539acfe93 100644
--- a/vendor/github.com/containers/storage/images_ffjson.go
+++ b/vendor/github.com/containers/storage/images_ffjson.go
@@ -1,5 +1,5 @@
 // Code generated by ffjson <https://github.com/pquerna/ffjson>. DO NOT EDIT.
-// source: images.go
+// source: ./images.go
 
 package storage
 
diff --git a/vendor/github.com/containers/storage/layers.go b/vendor/github.com/containers/storage/layers.go
index d612f0459..110e737b2 100644
--- a/vendor/github.com/containers/storage/layers.go
+++ b/vendor/github.com/containers/storage/layers.go
@@ -229,6 +229,7 @@ type LayerStore interface {
 
 type layerStore struct {
 	lockfile          Locker
+	mountsLockfile    Locker
 	rundir            string
 	driver            drivers.Driver
 	layerdir          string
@@ -291,7 +292,6 @@ func (r *layerStore) Load() error {
 	idlist := []string{}
 	ids := make(map[string]*Layer)
 	names := make(map[string]*Layer)
-	mounts := make(map[string]*Layer)
 	compressedsums := make(map[digest.Digest][]string)
 	uncompressedsums := make(map[digest.Digest][]string)
 	if r.lockfile.IsReadWrite() {
@@ -319,39 +319,29 @@ func (r *layerStore) Load() error {
 				label.ReserveLabel(layer.MountLabel)
 			}
 		}
+		err = nil
 	}
-	if shouldSave && !r.IsReadWrite() {
+	if shouldSave && (!r.IsReadWrite() || !r.Locked()) {
 		return ErrDuplicateLayerNames
 	}
-	mpath := r.mountspath()
-	data, err = ioutil.ReadFile(mpath)
-	if err != nil && !os.IsNotExist(err) {
-		return err
-	}
-	layerMounts := []layerMountPoint{}
-	if err = json.Unmarshal(data, &layerMounts); len(data) == 0 || err == nil {
-		for _, mount := range layerMounts {
-			if mount.MountPoint != "" {
-				if layer, ok := ids[mount.ID]; ok {
-					mounts[mount.MountPoint] = layer
-					layer.MountPoint = mount.MountPoint
-					layer.MountCount = mount.MountCount
-				}
-			}
-		}
-	}
 	r.layers = layers
 	r.idindex = truncindex.NewTruncIndex(idlist)
 	r.byid = ids
 	r.byname = names
-	r.bymount = mounts
 	r.bycompressedsum = compressedsums
 	r.byuncompressedsum = uncompressedsums
-	err = nil
+	// Load and merge information about which layers are mounted, and where.
+	if r.IsReadWrite() {
+		r.mountsLockfile.RLock()
+		defer r.mountsLockfile.Unlock()
+		if err = r.loadMounts(); err != nil {
+			return err
+		}
+	}
 	// Last step: if we're writable, try to remove anything that a previous
 	// user of this storage area marked for deletion but didn't manage to
 	// actually delete.
-	if r.IsReadWrite() {
+	if r.IsReadWrite() && r.Locked() {
 		for _, layer := range r.layers {
 			if layer.Flags == nil {
 				layer.Flags = make(map[string]interface{})
@@ -373,12 +363,36 @@ func (r *layerStore) Load() error {
 	return err
 }
 
+func (r *layerStore) loadMounts() error {
+	mounts := make(map[string]*Layer)
+	mpath := r.mountspath()
+	data, err := ioutil.ReadFile(mpath)
+	if err != nil && !os.IsNotExist(err) {
+		return err
+	}
+	layerMounts := []layerMountPoint{}
+	if err = json.Unmarshal(data, &layerMounts); len(data) == 0 || err == nil {
+		for _, mount := range layerMounts {
+			if mount.MountPoint != "" {
+				if layer, ok := r.lookup(mount.ID); ok {
+					mounts[mount.MountPoint] = layer
+					layer.MountPoint = mount.MountPoint
+					layer.MountCount = mount.MountCount
+				}
+			}
+		}
+		err = nil
+	}
+	r.bymount = mounts
+	return err
+}
+
 func (r *layerStore) Save() error {
 	if !r.IsReadWrite() {
 		return errors.Wrapf(ErrStoreIsReadOnly, "not allowed to modify the layer store at %q", r.layerspath())
 	}
 	if !r.Locked() {
-		return errors.New("layer store is not locked")
+		return errors.New("layer store is not locked for writing")
 	}
 	rpath := r.layerspath()
 	if err := os.MkdirAll(filepath.Dir(rpath), 0700); err != nil {
@@ -388,6 +402,25 @@ func (r *layerStore) Save() error {
 	if err != nil {
 		return err
 	}
+	if err := ioutils.AtomicWriteFile(rpath, jldata, 0600); err != nil {
+		return err
+	}
+	if !r.IsReadWrite() {
+		return nil
+	}
+	r.mountsLockfile.Lock()
+	defer r.mountsLockfile.Unlock()
+	defer r.mountsLockfile.Touch()
+	return r.saveMounts()
+}
+
+func (r *layerStore) saveMounts() error {
+	if !r.IsReadWrite() {
+		return errors.Wrapf(ErrStoreIsReadOnly, "not allowed to modify the layer store at %q", r.layerspath())
+	}
+	if !r.mountsLockfile.Locked() {
+		return errors.New("layer store mount information is not locked for writing")
+	}
 	mpath := r.mountspath()
 	if err := os.MkdirAll(filepath.Dir(mpath), 0700); err != nil {
 		return err
@@ -406,11 +439,10 @@ func (r *layerStore) Save() error {
 	if err != nil {
 		return err
 	}
-	if err := ioutils.AtomicWriteFile(rpath, jldata, 0600); err != nil {
+	if err = ioutils.AtomicWriteFile(mpath, jmdata, 0600); err != nil {
 		return err
 	}
-	defer r.Touch()
-	return ioutils.AtomicWriteFile(mpath, jmdata, 0600)
+	return r.loadMounts()
 }
 
 func newLayerStore(rundir string, layerdir string, driver drivers.Driver, uidMap, gidMap []idtools.IDMap) (LayerStore, error) {
@@ -426,16 +458,21 @@ func newLayerStore(rundir string, layerdir string, driver drivers.Driver, uidMap
 	}
 	lockfile.Lock()
 	defer lockfile.Unlock()
+	mountsLockfile, err := GetLockfile(filepath.Join(rundir, "mountpoints.lock"))
+	if err != nil {
+		return nil, err
+	}
 	rlstore := layerStore{
-		lockfile: lockfile,
-		driver:   driver,
-		rundir:   rundir,
-		layerdir: layerdir,
-		byid:     make(map[string]*Layer),
-		bymount:  make(map[string]*Layer),
-		byname:   make(map[string]*Layer),
-		uidMap:   copyIDMap(uidMap),
-		gidMap:   copyIDMap(gidMap),
+		lockfile:       lockfile,
+		mountsLockfile: mountsLockfile,
+		driver:         driver,
+		rundir:         rundir,
+		layerdir:       layerdir,
+		byid:           make(map[string]*Layer),
+		bymount:        make(map[string]*Layer),
+		byname:         make(map[string]*Layer),
+		uidMap:         copyIDMap(uidMap),
+		gidMap:         copyIDMap(gidMap),
 	}
 	if err := rlstore.Load(); err != nil {
 		return nil, err
@@ -451,13 +488,14 @@ func newROLayerStore(rundir string, layerdir string, driver drivers.Driver) (ROL
 	lockfile.Lock()
 	defer lockfile.Unlock()
 	rlstore := layerStore{
-		lockfile: lockfile,
-		driver:   driver,
-		rundir:   rundir,
-		layerdir: layerdir,
-		byid:     make(map[string]*Layer),
-		bymount:  make(map[string]*Layer),
-		byname:   make(map[string]*Layer),
+		lockfile:       lockfile,
+		mountsLockfile: nil,
+		driver:         driver,
+		rundir:         rundir,
+		layerdir:       layerdir,
+		byid:           make(map[string]*Layer),
+		bymount:        make(map[string]*Layer),
+		byname:         make(map[string]*Layer),
 	}
 	if err := rlstore.Load(); err != nil {
 		return nil, err
@@ -673,6 +711,16 @@ func (r *layerStore) Create(id string, parent *Layer, names []string, mountLabel
 }
 
 func (r *layerStore) Mounted(id string) (int, error) {
+	if !r.IsReadWrite() {
+		return 0, errors.Wrapf(ErrStoreIsReadOnly, "no mount information for layers at %q", r.mountspath())
+	}
+	r.mountsLockfile.RLock()
+	defer r.mountsLockfile.Unlock()
+	if modified, err := r.mountsLockfile.Modified(); modified || err != nil {
+		if err = r.loadMounts(); err != nil {
+			return 0, err
+		}
+	}
 	layer, ok := r.lookup(id)
 	if !ok {
 		return 0, ErrLayerUnknown
@@ -684,13 +732,21 @@ func (r *layerStore) Mount(id string, options drivers.MountOpts) (string, error)
 	if !r.IsReadWrite() {
 		return "", errors.Wrapf(ErrStoreIsReadOnly, "not allowed to update mount locations for layers at %q", r.mountspath())
 	}
+	r.mountsLockfile.Lock()
+	defer r.mountsLockfile.Unlock()
+	if modified, err := r.mountsLockfile.Modified(); modified || err != nil {
+		if err = r.loadMounts(); err != nil {
+			return "", err
+		}
+	}
+	defer r.mountsLockfile.Touch()
 	layer, ok := r.lookup(id)
 	if !ok {
 		return "", ErrLayerUnknown
 	}
 	if layer.MountCount > 0 {
 		layer.MountCount++
-		return layer.MountPoint, r.Save()
+		return layer.MountPoint, r.saveMounts()
 	}
 	if options.MountLabel == "" {
 		options.MountLabel = layer.MountLabel
@@ -709,7 +765,7 @@ func (r *layerStore) Mount(id string, options drivers.MountOpts) (string, error)
 		layer.MountPoint = filepath.Clean(mountpoint)
 		layer.MountCount++
 		r.bymount[layer.MountPoint] = layer
-		err = r.Save()
+		err = r.saveMounts()
 	}
 	return mountpoint, err
 }
@@ -718,6 +774,14 @@ func (r *layerStore) Unmount(id string, force bool) (bool, error) {
 	if !r.IsReadWrite() {
 		return false, errors.Wrapf(ErrStoreIsReadOnly, "not allowed to update mount locations for layers at %q", r.mountspath())
 	}
+	r.mountsLockfile.Lock()
+	defer r.mountsLockfile.Unlock()
+	if modified, err := r.mountsLockfile.Modified(); modified || err != nil {
+		if err = r.loadMounts(); err != nil {
+			return false, err
+		}
+	}
+	defer r.mountsLockfile.Touch()
 	layer, ok := r.lookup(id)
 	if !ok {
 		layerByMount, ok := r.bymount[filepath.Clean(id)]
@@ -731,7 +795,7 @@ func (r *layerStore) Unmount(id string, force bool) (bool, error) {
 	}
 	if layer.MountCount > 1 {
 		layer.MountCount--
-		return true, r.Save()
+		return true, r.saveMounts()
 	}
 	err := r.driver.Put(id)
 	if err == nil || os.IsNotExist(err) {
@@ -740,12 +804,22 @@ func (r *layerStore) Unmount(id string, force bool) (bool, error) {
 		}
 		layer.MountCount--
 		layer.MountPoint = ""
-		return false, r.Save()
+		return false, r.saveMounts()
 	}
 	return true, err
 }
 
 func (r *layerStore) ParentOwners(id string) (uids, gids []int, err error) {
+	if !r.IsReadWrite() {
+		return nil, nil, errors.Wrapf(ErrStoreIsReadOnly, "no mount information for layers at %q", r.mountspath())
+	}
+	r.mountsLockfile.RLock()
+	defer r.mountsLockfile.Unlock()
+	if modified, err := r.mountsLockfile.Modified(); modified || err != nil {
+		if err = r.loadMounts(); err != nil {
+			return nil, nil, err
+		}
+	}
 	layer, ok := r.lookup(id)
 	if !ok {
 		return nil, nil, ErrLayerUnknown
@@ -862,14 +936,23 @@ func (r *layerStore) Delete(id string) error {
 		return ErrLayerUnknown
 	}
 	id = layer.ID
-	// This check is needed for idempotency of delete where the layer could have been
-	// already unmounted (since c/storage gives you that API directly)
-	for layer.MountCount > 0 {
+	// The layer may already have been explicitly unmounted, but if not, we
+	// should try to clean that up before we start deleting anything at the
+	// driver level.
+	mountCount, err := r.Mounted(id)
+	if err != nil {
+		return errors.Wrapf(err, "error checking if layer %q is still mounted", id)
+	}
+	for mountCount > 0 {
 		if _, err := r.Unmount(id, false); err != nil {
 			return err
 		}
+		mountCount, err = r.Mounted(id)
+		if err != nil {
+			return errors.Wrapf(err, "error checking if layer %q is still mounted", id)
+		}
 	}
-	err := r.driver.Remove(id)
+	err = r.driver.Remove(id)
 	if err == nil {
 		os.Remove(r.tspath(id))
 		delete(r.byid, id)
@@ -1235,7 +1318,20 @@ func (r *layerStore) Touch() error {
 }
 
 func (r *layerStore) Modified() (bool, error) {
-	return r.lockfile.Modified()
+	var mmodified bool
+	lmodified, err := r.lockfile.Modified()
+	if err != nil {
+		return lmodified, err
+	}
+	if r.IsReadWrite() {
+		r.mountsLockfile.RLock()
+		defer r.mountsLockfile.Unlock()
+		mmodified, err = r.mountsLockfile.Modified()
+		if err != nil {
+			return lmodified, err
+		}
+	}
+	return lmodified || mmodified, nil
 }
 
 func (r *layerStore) IsReadWrite() bool {
diff --git a/vendor/github.com/containers/storage/lockfile.go b/vendor/github.com/containers/storage/lockfile.go
index 7f07b9ac5..3a1befcbe 100644
--- a/vendor/github.com/containers/storage/lockfile.go
+++ b/vendor/github.com/containers/storage/lockfile.go
@@ -35,7 +35,7 @@ type Locker interface {
 	// IsReadWrite() checks if the lock file is read-write
 	IsReadWrite() bool
 
-	// Locked() checks if lock is locked
+	// Locked() checks if lock is locked for writing by a thread in this process
 	Locked() bool
 }
 
@@ -66,7 +66,10 @@ func getLockfile(path string, ro bool) (Locker, error) {
 	if lockfiles == nil {
 		lockfiles = make(map[string]Locker)
 	}
-	cleanPath := filepath.Clean(path)
+	cleanPath, err := filepath.Abs(path)
+	if err != nil {
+		return nil, errors.Wrapf(err, "error ensuring that path %q is an absolute path", path)
+	}
 	if locker, ok := lockfiles[cleanPath]; ok {
 		if ro && locker.IsReadWrite() {
 			return nil, errors.Errorf("lock %q is not a read-only lock", cleanPath)
diff --git a/vendor/github.com/containers/storage/lockfile_darwin.go b/vendor/github.com/containers/storage/lockfile_otherunix.go
index 041d54c05..041d54c05 100644
--- a/vendor/github.com/containers/storage/lockfile_darwin.go
+++ b/vendor/github.com/containers/storage/lockfile_otherunix.go
diff --git a/vendor/github.com/containers/storage/lockfile_unix.go b/vendor/github.com/containers/storage/lockfile_unix.go
index 0adbc49a5..a9dc64122 100644
--- a/vendor/github.com/containers/storage/lockfile_unix.go
+++ b/vendor/github.com/containers/storage/lockfile_unix.go
@@ -32,7 +32,7 @@ func getLockFile(path string, ro bool) (Locker, error) {
 	}
 	return &lockfile{
 		stateMutex: &sync.Mutex{},
-		writeMutex: &sync.Mutex{},
+		rwMutex:    &sync.RWMutex{},
 		file:       path,
 		fd:         uintptr(fd),
 		lw:         stringid.GenerateRandomID(),
@@ -42,10 +42,10 @@ func getLockFile(path string, ro bool) (Locker, error) {
 }
 
 type lockfile struct {
-	// stateMutex is used to synchronize concurrent accesses
+	// rwMutex serializes concurrent reader-writer acquisitions in the same process space
+	rwMutex *sync.RWMutex
+	// stateMutex is used to synchronize concurrent accesses to the state below
 	stateMutex *sync.Mutex
-	// writeMutex is used to serialize and avoid recursive writer locks
-	writeMutex *sync.Mutex
 	counter    int64
 	file       string
 	fd         uintptr
@@ -65,23 +65,24 @@ func (l *lockfile) lock(l_type int16) {
 		Len:    0,
 		Pid:    int32(os.Getpid()),
 	}
-	if l_type == unix.F_WRLCK {
-		// If we try to lock as a writer, lock the writerMutex first to
-		// avoid multiple writer acquisitions of the same process.
-		// Note: it's important to lock it prior to the stateMutex to
-		// avoid a deadlock.
-		l.writeMutex.Lock()
+	switch l_type {
+	case unix.F_RDLCK:
+		l.rwMutex.RLock()
+	case unix.F_WRLCK:
+		l.rwMutex.Lock()
+	default:
+		panic(fmt.Sprintf("attempted to acquire a file lock of unrecognized type %d", l_type))
 	}
 	l.stateMutex.Lock()
-	l.locktype = l_type
 	if l.counter == 0 {
 		// Optimization: only use the (expensive) fcntl syscall when
-		// the counter is 0.  If it's greater than that, we're owning
-		// the lock already and can only be a reader.
+		// the counter is 0.  In this case, we're either the first
+		// reader lock or a writer lock.
 		for unix.FcntlFlock(l.fd, unix.F_SETLKW, &lk) != nil {
 			time.Sleep(10 * time.Millisecond)
 		}
 	}
+	l.locktype = l_type
 	l.locked = true
 	l.counter++
 	l.stateMutex.Unlock()
@@ -133,19 +134,28 @@ func (l *lockfile) Unlock() {
 			time.Sleep(10 * time.Millisecond)
 		}
 	}
-	if l.locktype == unix.F_WRLCK {
-		l.writeMutex.Unlock()
+	if l.locktype == unix.F_RDLCK {
+		l.rwMutex.RUnlock()
+	} else {
+		l.rwMutex.Unlock()
 	}
 	l.stateMutex.Unlock()
 }
 
-// Locked checks if lockfile is locked.
+// Locked checks if lockfile is locked for writing by a thread in this process.
 func (l *lockfile) Locked() bool {
-	return l.locked
+	l.stateMutex.Lock()
+	defer l.stateMutex.Unlock()
+	return l.locked && (l.locktype == unix.F_WRLCK)
 }
 
 // Touch updates the lock file with the UID of the user.
 func (l *lockfile) Touch() error {
+	l.stateMutex.Lock()
+	if !l.locked || (l.locktype != unix.F_WRLCK) {
+		panic("attempted to update last-writer in lockfile without the write lock")
+	}
+	l.stateMutex.Unlock()
 	l.lw = stringid.GenerateRandomID()
 	id := []byte(l.lw)
 	_, err := unix.Seek(int(l.fd), 0, os.SEEK_SET)
@@ -170,6 +180,11 @@ func (l *lockfile) Touch() error {
 // was loaded.
 func (l *lockfile) Modified() (bool, error) {
 	id := []byte(l.lw)
+	l.stateMutex.Lock()
+	if !l.locked {
+		panic("attempted to check last-writer in lockfile without locking it first")
+	}
+	l.stateMutex.Unlock()
 	_, err := unix.Seek(int(l.fd), 0, os.SEEK_SET)
 	if err != nil {
 		return true, err
@@ -179,7 +194,7 @@ func (l *lockfile) Modified() (bool, error) {
 		return true, err
 	}
 	if n != len(id) {
-		return true, unix.ENOSPC
+		return true, nil
 	}
 	lw := l.lw
 	l.lw = string(id)
diff --git a/vendor/github.com/containers/storage/pkg/archive/archive.go b/vendor/github.com/containers/storage/pkg/archive/archive.go
index ba1704250..9cc717e5a 100644
--- a/vendor/github.com/containers/storage/pkg/archive/archive.go
+++ b/vendor/github.com/containers/storage/pkg/archive/archive.go
@@ -636,7 +636,7 @@ func createTarFile(path, extractDir string, hdr *tar.Header, reader io.Reader, L
 		if chownOpts == nil {
 			chownOpts = &idtools.IDPair{UID: hdr.Uid, GID: hdr.Gid}
 		}
-		if err := os.Lchown(path, chownOpts.UID, chownOpts.GID); err != nil {
+		if err := idtools.SafeLchown(path, chownOpts.UID, chownOpts.GID); err != nil {
 			return err
 		}
 	}
diff --git a/vendor/github.com/containers/storage/pkg/archive/archive_linux.go b/vendor/github.com/containers/storage/pkg/archive/archive_linux.go
index 6e33ac38d..5602c7e21 100644
--- a/vendor/github.com/containers/storage/pkg/archive/archive_linux.go
+++ b/vendor/github.com/containers/storage/pkg/archive/archive_linux.go
@@ -7,6 +7,7 @@ import (
 	"strings"
 	"syscall"
 
+	"github.com/containers/storage/pkg/idtools"
 	"github.com/containers/storage/pkg/system"
 	"golang.org/x/sys/unix"
 )
@@ -130,7 +131,7 @@ func (overlayWhiteoutConverter) ConvertRead(hdr *tar.Header, path string) (bool,
 		if err := unix.Mknod(originalPath, unix.S_IFCHR, 0); err != nil {
 			return false, err
 		}
-		if err := os.Chown(originalPath, hdr.Uid, hdr.Gid); err != nil {
+		if err := idtools.SafeChown(originalPath, hdr.Uid, hdr.Gid); err != nil {
 			return false, err
 		}
 
diff --git a/vendor/github.com/containers/storage/pkg/idtools/idtools.go b/vendor/github.com/containers/storage/pkg/idtools/idtools.go
index 9c591aff8..815589382 100644
--- a/vendor/github.com/containers/storage/pkg/idtools/idtools.go
+++ b/vendor/github.com/containers/storage/pkg/idtools/idtools.go
@@ -7,6 +7,9 @@ import (
 	"sort"
 	"strconv"
 	"strings"
+	"syscall"
+
+	"github.com/pkg/errors"
 )
 
 // IDMap contains a single entry for user namespace range remapping. An array
@@ -277,3 +280,18 @@ func parseSubidFile(path, username string) (ranges, error) {
 	}
 	return rangeList, nil
 }
+
+func checkChownErr(err error, name string, uid, gid int) error {
+	if e, ok := err.(*os.PathError); ok && e.Err == syscall.EINVAL {
+		return errors.Wrapf(err, "there might not be enough IDs available in the namespace (requested %d:%d for %s)", uid, gid, name)
+	}
+	return err
+}
+
+func SafeChown(name string, uid, gid int) error {
+	return checkChownErr(os.Chown(name, uid, gid), name, uid, gid)
+}
+
+func SafeLchown(name string, uid, gid int) error {
+	return checkChownErr(os.Lchown(name, uid, gid), name, uid, gid)
+}
diff --git a/vendor/github.com/containers/storage/pkg/idtools/idtools_unix.go b/vendor/github.com/containers/storage/pkg/idtools/idtools_unix.go
index b5870506a..bdbdf1b50 100644
--- a/vendor/github.com/containers/storage/pkg/idtools/idtools_unix.go
+++ b/vendor/github.com/containers/storage/pkg/idtools/idtools_unix.go
@@ -30,7 +30,7 @@ func mkdirAs(path string, mode os.FileMode, ownerUID, ownerGID int, mkAll, chown
 		paths = []string{path}
 	} else if err == nil && chownExisting {
 		// short-circuit--we were called with an existing directory and chown was requested
-		return os.Chown(path, ownerUID, ownerGID)
+		return SafeChown(path, ownerUID, ownerGID)
 	} else if err == nil {
 		// nothing to do; directory path fully exists already and chown was NOT requested
 		return nil
@@ -60,7 +60,7 @@ func mkdirAs(path string, mode os.FileMode, ownerUID, ownerGID int, mkAll, chown
 	// even if it existed, we will chown the requested path + any subpaths that
 	// didn't exist when we called MkdirAll
 	for _, pathComponent := range paths {
-		if err := os.Chown(pathComponent, ownerUID, ownerGID); err != nil {
+		if err := SafeChown(pathComponent, ownerUID, ownerGID); err != nil {
 			return err
 		}
 	}
diff --git a/vendor/github.com/containers/storage/pkg/reexec/command_linux.go b/vendor/github.com/containers/storage/pkg/reexec/command_linux.go
index 05319eacc..1ae728a61 100644
--- a/vendor/github.com/containers/storage/pkg/reexec/command_linux.go
+++ b/vendor/github.com/containers/storage/pkg/reexec/command_linux.go
@@ -3,6 +3,7 @@
 package reexec
 
 import (
+	"context"
 	"os/exec"
 	"syscall"
 
@@ -20,11 +21,23 @@ func Self() string {
 // This will use the in-memory version (/proc/self/exe) of the current binary,
 // it is thus safe to delete or replace the on-disk binary (os.Args[0]).
 func Command(args ...string) *exec.Cmd {
-	return &exec.Cmd{
-		Path: Self(),
-		Args: args,
-		SysProcAttr: &syscall.SysProcAttr{
-			Pdeathsig: unix.SIGTERM,
-		},
+	cmd := exec.Command(Self())
+	cmd.Args = args
+	cmd.SysProcAttr = &syscall.SysProcAttr{
+		Pdeathsig: unix.SIGTERM,
 	}
+	return cmd
+}
+
+// CommandContext returns *exec.Cmd which has Path as current binary, and also
+// sets SysProcAttr.Pdeathsig to SIGTERM.
+// This will use the in-memory version (/proc/self/exe) of the current binary,
+// it is thus safe to delete or replace the on-disk binary (os.Args[0]).
+func CommandContext(ctx context.Context, args ...string) *exec.Cmd {
+	cmd := exec.CommandContext(ctx, Self())
+	cmd.Args = args
+	cmd.SysProcAttr = &syscall.SysProcAttr{
+		Pdeathsig: unix.SIGTERM,
+	}
+	return cmd
 }
diff --git a/vendor/github.com/containers/storage/pkg/reexec/command_unix.go b/vendor/github.com/containers/storage/pkg/reexec/command_unix.go
index 778a720e3..1ecaa906f 100644
--- a/vendor/github.com/containers/storage/pkg/reexec/command_unix.go
+++ b/vendor/github.com/containers/storage/pkg/reexec/command_unix.go
@@ -3,6 +3,7 @@
 package reexec
 
 import (
+	"context"
 	"os/exec"
 )
 
@@ -16,8 +17,14 @@ func Self() string {
 // For example if current binary is "docker" at "/usr/bin/", then cmd.Path will
 // be set to "/usr/bin/docker".
 func Command(args ...string) *exec.Cmd {
-	return &exec.Cmd{
-		Path: Self(),
-		Args: args,
-	}
+	cmd := exec.Command(Self())
+	cmd.Args = args
+	return cmd
+}
+
+// CommandContext returns *exec.Cmd which has Path as current binary.
+func CommandContext(ctx context.Context, args ...string) *exec.Cmd {
+	cmd := exec.CommandContext(ctx, Self())
+	cmd.Args = args
+	return cmd
 }
diff --git a/vendor/github.com/containers/storage/pkg/reexec/command_unsupported.go b/vendor/github.com/containers/storage/pkg/reexec/command_unsupported.go
index 76edd8242..9d9374268 100644
--- a/vendor/github.com/containers/storage/pkg/reexec/command_unsupported.go
+++ b/vendor/github.com/containers/storage/pkg/reexec/command_unsupported.go
@@ -3,6 +3,7 @@
 package reexec
 
 import (
+	"context"
 	"os/exec"
 )
 
@@ -10,3 +11,8 @@ import (
 func Command(args ...string) *exec.Cmd {
 	return nil
 }
+
+// CommandContext is unsupported on operating systems apart from Linux, Windows, Solaris and Darwin.
+func CommandContext(ctx context.Context, args ...string) *exec.Cmd {
+	return nil
+}
diff --git a/vendor/github.com/containers/storage/pkg/reexec/command_windows.go b/vendor/github.com/containers/storage/pkg/reexec/command_windows.go
index ca871c422..673ab476a 100644
--- a/vendor/github.com/containers/storage/pkg/reexec/command_windows.go
+++ b/vendor/github.com/containers/storage/pkg/reexec/command_windows.go
@@ -3,6 +3,7 @@
 package reexec
 
 import (
+	"context"
 	"os/exec"
 )
 
@@ -16,8 +17,16 @@ func Self() string {
 // For example if current binary is "docker.exe" at "C:\", then cmd.Path will
 // be set to "C:\docker.exe".
 func Command(args ...string) *exec.Cmd {
-	return &exec.Cmd{
-		Path: Self(),
-		Args: args,
-	}
+	cmd := exec.Command(Self())
+	cmd.Args = args
+	return cmd
+}
+
+// Command returns *exec.Cmd which has Path as current binary.
+// For example if current binary is "docker.exe" at "C:\", then cmd.Path will
+// be set to "C:\docker.exe".
+func CommandContext(ctx context.Context, args ...string) *exec.Cmd {
+	cmd := exec.CommandContext(ctx, Self())
+	cmd.Args = args
+	return cmd
 }
diff --git a/vendor/github.com/containers/storage/store.go b/vendor/github.com/containers/storage/store.go
index d53703d6b..7e39e3959 100644
--- a/vendor/github.com/containers/storage/store.go
+++ b/vendor/github.com/containers/storage/store.go
@@ -32,7 +32,7 @@ import (
 
 var (
 	// DefaultStoreOptions is a reasonable default set of options.
-	DefaultStoreOptions StoreOptions
+	defaultStoreOptions StoreOptions
 	stores              []*store
 	storesLock          sync.Mutex
 )
@@ -102,19 +102,21 @@ type ROBigDataStore interface {
 	BigDataNames(id string) ([]string, error)
 }
 
-// A RWBigDataStore wraps up the read-write big-data related methods of the
-// various types of file-based lookaside stores that we implement.
-type RWBigDataStore interface {
-	// SetBigData stores a (potentially large) piece of data associated with this
-	// ID.
-	SetBigData(id, key string, data []byte) error
+// A RWImageBigDataStore wraps up how we store big-data associated with images.
+type RWImageBigDataStore interface {
+	// SetBigData stores a (potentially large) piece of data associated
+	// with this ID.
+	// Pass github.com/containers/image/manifest.Digest as digestManifest
+	// to allow ByDigest to find images by their correct digests.
+	SetBigData(id, key string, data []byte, digestManifest func([]byte) (digest.Digest, error)) error
 }
 
-// A BigDataStore wraps up the most common big-data related methods of the
-// various types of file-based lookaside stores that we implement.
-type BigDataStore interface {
+// A ContainerBigDataStore wraps up how we store big-data associated with containers.
+type ContainerBigDataStore interface {
 	ROBigDataStore
-	RWBigDataStore
+	// SetBigData stores a (potentially large) piece of data associated
+	// with this ID.
+	SetBigData(id, key string, data []byte) error
 }
 
 // A FlaggableStore can have flags set and cleared on items which it manages.
@@ -352,9 +354,11 @@ type Store interface {
 	// of named data associated with an image.
 	ImageBigDataDigest(id, key string) (digest.Digest, error)
 
-	// SetImageBigData stores a (possibly large) chunk of named data associated
-	// with an image.
-	SetImageBigData(id, key string, data []byte) error
+	// SetImageBigData stores a (possibly large) chunk of named data
+	// associated with an image.  Pass
+	// github.com/containers/image/manifest.Digest as digestManifest to
+	// allow ImagesByDigest to find images by their correct digests.
+	SetImageBigData(id, key string, data []byte, digestManifest func([]byte) (digest.Digest, error)) error
 
 	// ImageSize computes the size of the image's layers and ancillary data.
 	ImageSize(id string) (int64, error)
@@ -546,14 +550,22 @@ type store struct {
 //   }
 func GetStore(options StoreOptions) (Store, error) {
 	if options.RunRoot == "" && options.GraphRoot == "" && options.GraphDriverName == "" && len(options.GraphDriverOptions) == 0 {
-		options = DefaultStoreOptions
+		options = defaultStoreOptions
 	}
 
 	if options.GraphRoot != "" {
-		options.GraphRoot = filepath.Clean(options.GraphRoot)
+		dir, err := filepath.Abs(options.GraphRoot)
+		if err != nil {
+			return nil, errors.Wrapf(err, "error deriving an absolute path from %q", options.GraphRoot)
+		}
+		options.GraphRoot = dir
 	}
 	if options.RunRoot != "" {
-		options.RunRoot = filepath.Clean(options.RunRoot)
+		dir, err := filepath.Abs(options.RunRoot)
+		if err != nil {
+			return nil, errors.Wrapf(err, "error deriving an absolute path from %q", options.RunRoot)
+		}
+		options.RunRoot = dir
 	}
 
 	storesLock.Lock()
@@ -1321,7 +1333,7 @@ func (s *store) Metadata(id string) (string, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1343,7 +1355,7 @@ func (s *store) Metadata(id string) (string, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1359,7 +1371,7 @@ func (s *store) Metadata(id string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	cstore.Lock()
+	cstore.RLock()
 	defer cstore.Unlock()
 	if modified, err := cstore.Modified(); modified || err != nil {
 		if err = cstore.Load(); err != nil {
@@ -1383,7 +1395,7 @@ func (s *store) ListImageBigData(id string) ([]string, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1409,7 +1421,7 @@ func (s *store) ImageBigDataSize(id, key string) (int64, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1436,7 +1448,7 @@ func (s *store) ImageBigDataDigest(id, key string) (digest.Digest, error) {
 	stores = append([]ROImageStore{ristore}, stores...)
 	for _, r := range stores {
 		ristore := r
-		ristore.Lock()
+		ristore.RLock()
 		defer ristore.Unlock()
 		if modified, err := ristore.Modified(); modified || err != nil {
 			if err = ristore.Load(); err != nil {
@@ -1477,7 +1489,7 @@ func (s *store) ImageBigData(id, key string) ([]byte, error) {
 	return nil, ErrImageUnknown
 }
 
-func (s *store) SetImageBigData(id, key string, data []byte) error {
+func (s *store) SetImageBigData(id, key string, data []byte, digestManifest func([]byte) (digest.Digest, error)) error {
 	ristore, err := s.ImageStore()
 	if err != nil {
 		return err
@@ -1491,7 +1503,7 @@ func (s *store) SetImageBigData(id, key string, data []byte) error {
 		}
 	}
 
-	return ristore.SetBigData(id, key, data)
+	return ristore.SetBigData(id, key, data, digestManifest)
 }
 
 func (s *store) ImageSize(id string) (int64, error) {
@@ -1507,7 +1519,7 @@ func (s *store) ImageSize(id string) (int64, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1529,7 +1541,7 @@ func (s *store) ImageSize(id string) (int64, error) {
 	// Look for the image's record.
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1617,7 +1629,7 @@ func (s *store) ContainerSize(id string) (int64, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1641,7 +1653,7 @@ func (s *store) ContainerSize(id string) (int64, error) {
 	if err != nil {
 		return -1, err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -1705,7 +1717,7 @@ func (s *store) ListContainerBigData(id string) ([]string, error) {
 		return nil, err
 	}
 
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -1721,7 +1733,7 @@ func (s *store) ContainerBigDataSize(id, key string) (int64, error) {
 	if err != nil {
 		return -1, err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -1736,7 +1748,7 @@ func (s *store) ContainerBigDataDigest(id, key string) (digest.Digest, error) {
 	if err != nil {
 		return "", err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -1751,7 +1763,7 @@ func (s *store) ContainerBigData(id, key string) ([]byte, error) {
 	if err != nil {
 		return nil, err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -1787,7 +1799,7 @@ func (s *store) Exists(id string) bool {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1809,7 +1821,7 @@ func (s *store) Exists(id string) bool {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1825,7 +1837,7 @@ func (s *store) Exists(id string) bool {
 	if err != nil {
 		return false
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -1912,7 +1924,7 @@ func (s *store) Names(id string) ([]string, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1934,7 +1946,7 @@ func (s *store) Names(id string) ([]string, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1950,7 +1962,7 @@ func (s *store) Names(id string) ([]string, error) {
 	if err != nil {
 		return nil, err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -1974,7 +1986,7 @@ func (s *store) Lookup(name string) (string, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -1996,7 +2008,7 @@ func (s *store) Lookup(name string) (string, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2012,7 +2024,7 @@ func (s *store) Lookup(name string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	cstore.Lock()
+	cstore.RLock()
 	defer cstore.Unlock()
 	if modified, err := cstore.Modified(); modified || err != nil {
 		if err = cstore.Load(); err != nil {
@@ -2464,7 +2476,7 @@ func (s *store) Mounted(id string) (int, error) {
 	if err != nil {
 		return 0, err
 	}
-	rlstore.Lock()
+	rlstore.RLock()
 	defer rlstore.Unlock()
 	if modified, err := rlstore.Modified(); modified || err != nil {
 		if err = rlstore.Load(); err != nil {
@@ -2507,7 +2519,7 @@ func (s *store) Changes(from, to string) ([]archive.Change, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2532,7 +2544,7 @@ func (s *store) DiffSize(from, to string) (int64, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2612,7 +2624,7 @@ func (s *store) layersByMappedDigest(m func(ROLayerStore, digest.Digest) ([]Laye
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2659,7 +2671,7 @@ func (s *store) LayerSize(id string) (int64, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2678,7 +2690,7 @@ func (s *store) LayerParentOwners(id string) ([]int, []int, error) {
 	if err != nil {
 		return nil, nil, err
 	}
-	rlstore.Lock()
+	rlstore.RLock()
 	defer rlstore.Unlock()
 	if modified, err := rlstore.Modified(); modified || err != nil {
 		if err = rlstore.Load(); err != nil {
@@ -2700,14 +2712,14 @@ func (s *store) ContainerParentOwners(id string) ([]int, []int, error) {
 	if err != nil {
 		return nil, nil, err
 	}
-	rlstore.Lock()
+	rlstore.RLock()
 	defer rlstore.Unlock()
 	if modified, err := rlstore.Modified(); modified || err != nil {
 		if err = rlstore.Load(); err != nil {
 			return nil, nil, err
 		}
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -2738,7 +2750,7 @@ func (s *store) Layers() ([]Layer, error) {
 
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2767,7 +2779,7 @@ func (s *store) Images() ([]Image, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2789,7 +2801,7 @@ func (s *store) Containers() ([]Container, error) {
 		return nil, err
 	}
 
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -2811,7 +2823,7 @@ func (s *store) Layer(id string) (*Layer, error) {
 	}
 	for _, s := range append([]ROLayerStore{lstore}, lstores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2837,7 +2849,7 @@ func (s *store) Image(id string) (*Image, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2870,7 +2882,7 @@ func (s *store) ImagesByTopLayer(id string) ([]*Image, error) {
 	}
 	for _, s := range append([]ROImageStore{istore}, istores...) {
 		store := s
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2903,7 +2915,7 @@ func (s *store) ImagesByDigest(d digest.Digest) ([]*Image, error) {
 		return nil, err
 	}
 	for _, store := range append([]ROImageStore{istore}, istores...) {
-		store.Lock()
+		store.RLock()
 		defer store.Unlock()
 		if modified, err := store.Modified(); modified || err != nil {
 			if err = store.Load(); err != nil {
@@ -2924,7 +2936,7 @@ func (s *store) Container(id string) (*Container, error) {
 	if err != nil {
 		return nil, err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -2940,7 +2952,7 @@ func (s *store) ContainerLayerID(id string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -2963,7 +2975,7 @@ func (s *store) ContainerByLayer(id string) (*Container, error) {
 	if err != nil {
 		return nil, err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -2988,7 +3000,7 @@ func (s *store) ContainerDirectory(id string) (string, error) {
 	if err != nil {
 		return "", err
 	}
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -3015,7 +3027,7 @@ func (s *store) ContainerRunDirectory(id string) (string, error) {
 		return "", err
 	}
 
-	rcstore.Lock()
+	rcstore.RLock()
 	defer rcstore.Unlock()
 	if modified, err := rcstore.Modified(); modified || err != nil {
 		if err = rcstore.Load(); err != nil {
@@ -3205,8 +3217,20 @@ func copyStringInterfaceMap(m map[string]interface{}) map[string]interface{} {
 	return ret
 }
 
-// DefaultConfigFile path to the system wide storage.conf file
-const DefaultConfigFile = "/etc/containers/storage.conf"
+// defaultConfigFile path to the system wide storage.conf file
+const defaultConfigFile = "/etc/containers/storage.conf"
+
+// DefaultConfigFile returns the path to the storage config file used
+func DefaultConfigFile(rootless bool) (string, error) {
+	if rootless {
+		home, err := homeDir()
+		if err != nil {
+			return "", errors.Wrapf(err, "cannot determine users homedir")
+		}
+		return filepath.Join(home, ".config/containers/storage.conf"), nil
+	}
+	return defaultConfigFile, nil
+}
 
 // TOML-friendly explicit tables used for conversions.
 type tomlConfig struct {
@@ -3346,19 +3370,19 @@ func ReloadConfigurationFile(configFile string, storeOptions *StoreOptions) {
 }
 
 func init() {
-	DefaultStoreOptions.RunRoot = "/var/run/containers/storage"
-	DefaultStoreOptions.GraphRoot = "/var/lib/containers/storage"
-	DefaultStoreOptions.GraphDriverName = ""
+	defaultStoreOptions.RunRoot = "/var/run/containers/storage"
+	defaultStoreOptions.GraphRoot = "/var/lib/containers/storage"
+	defaultStoreOptions.GraphDriverName = ""
 
-	ReloadConfigurationFile(DefaultConfigFile, &DefaultStoreOptions)
+	ReloadConfigurationFile(defaultConfigFile, &defaultStoreOptions)
 }
 
 func GetDefaultMountOptions() ([]string, error) {
 	mountOpts := []string{
 		".mountopt",
-		fmt.Sprintf("%s.mountopt", DefaultStoreOptions.GraphDriverName),
+		fmt.Sprintf("%s.mountopt", defaultStoreOptions.GraphDriverName),
 	}
-	for _, option := range DefaultStoreOptions.GraphDriverOptions {
+	for _, option := range defaultStoreOptions.GraphDriverOptions {
 		key, val, err := parsers.ParseKeyValueOpt(option)
 		if err != nil {
 			return nil, err
diff --git a/vendor/github.com/containers/storage/utils.go b/vendor/github.com/containers/storage/utils.go
new file mode 100644
index 000000000..e74956c9e
--- /dev/null
+++ b/vendor/github.com/containers/storage/utils.go
@@ -0,0 +1,234 @@
+package storage
+
+import (
+	"fmt"
+	"os"
+	"os/exec"
+	"os/user"
+	"path/filepath"
+	"strings"
+
+	"github.com/BurntSushi/toml"
+	"github.com/containers/storage/pkg/idtools"
+	"github.com/containers/storage/pkg/system"
+	"github.com/pkg/errors"
+	"github.com/sirupsen/logrus"
+)
+
+// ParseIDMapping takes idmappings and subuid and subgid maps and returns a storage mapping
+func ParseIDMapping(UIDMapSlice, GIDMapSlice []string, subUIDMap, subGIDMap string) (*IDMappingOptions, error) {
+	options := IDMappingOptions{
+		HostUIDMapping: true,
+		HostGIDMapping: true,
+	}
+	if subGIDMap == "" && subUIDMap != "" {
+		subGIDMap = subUIDMap
+	}
+	if subUIDMap == "" && subGIDMap != "" {
+		subUIDMap = subGIDMap
+	}
+	if len(GIDMapSlice) == 0 && len(UIDMapSlice) != 0 {
+		GIDMapSlice = UIDMapSlice
+	}
+	if len(UIDMapSlice) == 0 && len(GIDMapSlice) != 0 {
+		UIDMapSlice = GIDMapSlice
+	}
+	if len(UIDMapSlice) == 0 && subUIDMap == "" && os.Getuid() != 0 {
+		UIDMapSlice = []string{fmt.Sprintf("0:%d:1", os.Getuid())}
+	}
+	if len(GIDMapSlice) == 0 && subGIDMap == "" && os.Getuid() != 0 {
+		GIDMapSlice = []string{fmt.Sprintf("0:%d:1", os.Getgid())}
+	}
+
+	if subUIDMap != "" && subGIDMap != "" {
+		mappings, err := idtools.NewIDMappings(subUIDMap, subGIDMap)
+		if err != nil {
+			return nil, errors.Wrapf(err, "failed to create NewIDMappings for uidmap=%s gidmap=%s", subUIDMap, subGIDMap)
+		}
+		options.UIDMap = mappings.UIDs()
+		options.GIDMap = mappings.GIDs()
+	}
+	parsedUIDMap, err := idtools.ParseIDMap(UIDMapSlice, "UID")
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to create ParseUIDMap UID=%s", UIDMapSlice)
+	}
+	parsedGIDMap, err := idtools.ParseIDMap(GIDMapSlice, "GID")
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to create ParseGIDMap GID=%s", UIDMapSlice)
+	}
+	options.UIDMap = append(options.UIDMap, parsedUIDMap...)
+	options.GIDMap = append(options.GIDMap, parsedGIDMap...)
+	if len(options.UIDMap) > 0 {
+		options.HostUIDMapping = false
+	}
+	if len(options.GIDMap) > 0 {
+		options.HostGIDMapping = false
+	}
+	return &options, nil
+}
+
+// GetRootlessRuntimeDir returns the runtime directory when running as non root
+func GetRootlessRuntimeDir(rootlessUid int) (string, error) {
+	runtimeDir := os.Getenv("XDG_RUNTIME_DIR")
+	if runtimeDir == "" {
+		tmpDir := fmt.Sprintf("/run/user/%d", rootlessUid)
+		st, err := system.Stat(tmpDir)
+		if err == nil && int(st.UID()) == os.Getuid() && st.Mode() == 0700 {
+			return tmpDir, nil
+		}
+	}
+	tmpDir := fmt.Sprintf("%s/%d", os.TempDir(), rootlessUid)
+	if err := os.MkdirAll(tmpDir, 0700); err != nil {
+		logrus.Errorf("failed to create %s: %v", tmpDir, err)
+	} else {
+		return tmpDir, nil
+	}
+	home, err := homeDir()
+	if err != nil {
+		return "", errors.Wrapf(err, "neither XDG_RUNTIME_DIR nor HOME was set non-empty")
+	}
+	resolvedHome, err := filepath.EvalSymlinks(home)
+	if err != nil {
+		return "", errors.Wrapf(err, "cannot resolve %s", home)
+	}
+	return filepath.Join(resolvedHome, "rundir"), nil
+}
+
+// getRootlessDirInfo returns the parent path of where the storage for containers and
+// volumes will be in rootless mode
+func getRootlessDirInfo(rootlessUid int) (string, string, error) {
+	rootlessRuntime, err := GetRootlessRuntimeDir(rootlessUid)
+	if err != nil {
+		return "", "", err
+	}
+
+	dataDir := os.Getenv("XDG_DATA_HOME")
+	if dataDir == "" {
+		home, err := homeDir()
+		if err != nil {
+			return "", "", errors.Wrapf(err, "neither XDG_DATA_HOME nor HOME was set non-empty")
+		}
+		// runc doesn't like symlinks in the rootfs path, and at least
+		// on CoreOS /home is a symlink to /var/home, so resolve any symlink.
+		resolvedHome, err := filepath.EvalSymlinks(home)
+		if err != nil {
+			return "", "", errors.Wrapf(err, "cannot resolve %s", home)
+		}
+		dataDir = filepath.Join(resolvedHome, ".local", "share")
+	}
+	return dataDir, rootlessRuntime, nil
+}
+
+// getRootlessStorageOpts returns the storage opts for containers running as non root
+func getRootlessStorageOpts(rootlessUid int) (StoreOptions, error) {
+	var opts StoreOptions
+
+	dataDir, rootlessRuntime, err := getRootlessDirInfo(rootlessUid)
+	if err != nil {
+		return opts, err
+	}
+	opts.RunRoot = rootlessRuntime
+	opts.GraphRoot = filepath.Join(dataDir, "containers", "storage")
+	if path, err := exec.LookPath("fuse-overlayfs"); err == nil {
+		opts.GraphDriverName = "overlay"
+		opts.GraphDriverOptions = []string{fmt.Sprintf("overlay.mount_program=%s", path)}
+	} else {
+		opts.GraphDriverName = "vfs"
+	}
+	return opts, nil
+}
+
+type tomlOptionsConfig struct {
+	MountProgram string `toml:"mount_program"`
+}
+
+func getTomlStorage(storeOptions *StoreOptions) *tomlConfig {
+	config := new(tomlConfig)
+
+	config.Storage.Driver = storeOptions.GraphDriverName
+	config.Storage.RunRoot = storeOptions.RunRoot
+	config.Storage.GraphRoot = storeOptions.GraphRoot
+	for _, i := range storeOptions.GraphDriverOptions {
+		s := strings.Split(i, "=")
+		if s[0] == "overlay.mount_program" {
+			config.Storage.Options.MountProgram = s[1]
+		}
+	}
+
+	return config
+}
+
+// DefaultStoreOptions returns the default storage ops for containers
+func DefaultStoreOptions(rootless bool, rootlessUid int) (StoreOptions, error) {
+	var (
+		defaultRootlessRunRoot   string
+		defaultRootlessGraphRoot string
+		err                      error
+	)
+	storageOpts := defaultStoreOptions
+	if rootless {
+		storageOpts, err = getRootlessStorageOpts(rootlessUid)
+		if err != nil {
+			return storageOpts, err
+		}
+	}
+
+	storageConf, err := DefaultConfigFile(rootless)
+	if err != nil {
+		return storageOpts, err
+	}
+	if _, err = os.Stat(storageConf); err == nil {
+		defaultRootlessRunRoot = storageOpts.RunRoot
+		defaultRootlessGraphRoot = storageOpts.GraphRoot
+		storageOpts = StoreOptions{}
+		ReloadConfigurationFile(storageConf, &storageOpts)
+	}
+
+	if !os.IsNotExist(err) {
+		return storageOpts, errors.Wrapf(err, "cannot stat %s", storageConf)
+	}
+
+	if rootless {
+		if err == nil {
+			// If the file did not specify a graphroot or runroot,
+			// set sane defaults so we don't try and use root-owned
+			// directories
+			if storageOpts.RunRoot == "" {
+				storageOpts.RunRoot = defaultRootlessRunRoot
+			}
+			if storageOpts.GraphRoot == "" {
+				storageOpts.GraphRoot = defaultRootlessGraphRoot
+			}
+		} else {
+			if err := os.MkdirAll(filepath.Dir(storageConf), 0755); err != nil {
+				return storageOpts, errors.Wrapf(err, "cannot make directory %s", filepath.Dir(storageConf))
+			}
+			file, err := os.OpenFile(storageConf, os.O_RDWR|os.O_CREATE|os.O_EXCL, 0666)
+			if err != nil {
+				return storageOpts, errors.Wrapf(err, "cannot open %s", storageConf)
+			}
+
+			tomlConfiguration := getTomlStorage(&storageOpts)
+			defer file.Close()
+			enc := toml.NewEncoder(file)
+			if err := enc.Encode(tomlConfiguration); err != nil {
+				os.Remove(storageConf)
+
+				return storageOpts, errors.Wrapf(err, "failed to encode %s", storageConf)
+			}
+		}
+	}
+	return storageOpts, nil
+}
+
+func homeDir() (string, error) {
+	home := os.Getenv("HOME")
+	if home == "" {
+		usr, err := user.Current()
+		if err != nil {
+			return "", errors.Wrapf(err, "neither XDG_RUNTIME_DIR nor HOME was set non-empty")
+		}
+		home = usr.HomeDir
+	}
+	return home, nil
+}
diff --git a/vendor/github.com/containers/storage/vendor.conf b/vendor/github.com/containers/storage/vendor.conf
index c143b049d..62a3f98ca 100644
--- a/vendor/github.com/containers/storage/vendor.conf
+++ b/vendor/github.com/containers/storage/vendor.conf
@@ -1,18 +1,15 @@
 github.com/BurntSushi/toml master
 github.com/Microsoft/go-winio 307e919c663683a9000576fdc855acaf9534c165
 github.com/Microsoft/hcsshim a8d9cc56cbce765a7eebdf4792e6ceceeff3edb8
-github.com/containers/image master
 github.com/davecgh/go-spew 346938d642f2ec3594ed81d874461961cd0faa76
 github.com/docker/docker 86f080cff0914e9694068ed78d503701667c4c00
 github.com/docker/go-units 0dadbb0345b35ec7ef35e228dabb8de89a65bf52
-github.com/docker/libtrust master
 github.com/klauspost/compress v1.4.1
 github.com/klauspost/cpuid v1.2.0
 github.com/klauspost/pgzip v1.2.1
 github.com/mattn/go-shellwords 753a2322a99f87c0eff284980e77f53041555bc6
 github.com/mistifyio/go-zfs c0224de804d438efd11ea6e52ada8014537d6062
 github.com/opencontainers/go-digest master
-github.com/opencontainers/image-spec master
 github.com/opencontainers/runc 6c22e77604689db8725fa866f0f2ec0b3e8c3a07
 github.com/opencontainers/selinux v1.1
 github.com/ostreedev/ostree-go master
diff --git a/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go b/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go
index dfc216389..a08be9ecd 100644
--- a/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go
+++ b/vendor/github.com/cri-o/ocicni/pkg/ocicni/ocicni.go
@@ -1,6 +1,7 @@
 package ocicni
 
 import (
+	"context"
 	"errors"
 	"fmt"
 	"net"
@@ -511,7 +512,7 @@ func (network *cniNetwork) addToNetwork(cacheDir string, podNetwork *PodNetwork,
 
 	netconf, cninet := network.NetworkConfig, network.CNIConfig
 	logrus.Infof("About to add CNI network %s (type=%v)", netconf.Name, netconf.Plugins[0].Network.Type)
-	res, err := cninet.AddNetworkList(netconf, rt)
+	res, err := cninet.AddNetworkList(context.Background(), netconf, rt)
 	if err != nil {
 		logrus.Errorf("Error adding network: %v", err)
 		return nil, err
@@ -529,7 +530,7 @@ func (network *cniNetwork) deleteFromNetwork(cacheDir string, podNetwork *PodNet
 
 	netconf, cninet := network.NetworkConfig, network.CNIConfig
 	logrus.Infof("About to del CNI network %s (type=%v)", netconf.Name, netconf.Plugins[0].Network.Type)
-	err = cninet.DelNetworkList(netconf, rt)
+	err = cninet.DelNetworkList(context.Background(), netconf, rt)
 	if err != nil {
 		logrus.Errorf("Error deleting network: %v", err)
 		return err
diff --git a/vendor/github.com/cri-o/ocicni/vendor.conf b/vendor/github.com/cri-o/ocicni/vendor.conf
new file mode 100644
index 000000000..d769d5177
--- /dev/null
+++ b/vendor/github.com/cri-o/ocicni/vendor.conf
@@ -0,0 +1,13 @@
+github.com/containernetworking/cni fbb95fff8a5239a4295c991efa8a397d43118f7e
+github.com/fsnotify/fsnotify 1485a34d5d5723fea214f5710708e19a831720e4
+github.com/sirupsen/logrus 787e519fa85519b874dead61020de598e9a23944
+github.com/onsi/ginkgo eea6ad008b96acdaa524f5b409513bf062b500ad
+github.com/onsi/gomega 90e289841c1ed79b7a598a7cd9959750cb5e89e2
+golang.org/x/net 63eda1eb0650888965ead1296efd04d0b2b61128
+gopkg.in/yaml.v2 51d6538a90f86fe93ac480b35f37b2be17fef232
+golang.org/x/text e3703dcdd614d2d7488fff034c75c551ea25da95
+golang.org/x/sys f49334f85ddcf0f08d7fb6dd7363e9e6d6b777eb
+github.com/hpcloud/tail a1dbeea552b7c8df4b542c66073e393de198a800
+gopkg.in/tomb.v1 dd632973f1e7218eb1089048e0798ec9ae7dceb8
+gopkg.in/fsnotify/fsnotify.v1 c2828203cd70a50dcccfb2761f8b1f8ceef9a8e9
+github.com/konsorten/go-windows-terminal-sequences f55edac94c9bbba5d6182a4be46d86a2c9b5b50e