podman pod clone

implement podman pod clone, a command to create an exact copy of a pod while changing
certain config elements

current supported flags are:
--name change the pod name
--destroy remove the original pod
--start run the new pod on creation
and all infra-container related flags from podman pod create (namespaces etc)

resolves #12843

Signed-off-by: cdoern <cdoern@redhat.com>

1 files changed, 21 insertions, 1 deletions

diff --git a/cmd/podman/common/create_opts.go b/cmd/podman/common/create_opts.go
index ad535ff59..fb5af8f59 100644
--- a/cmd/podman/common/create_opts.go
+++ b/cmd/podman/common/create_opts.go
@@ -2,6 +2,8 @@ package common
 
 import (
 	"github.com/containers/podman/v4/cmd/podman/registry"
+	"github.com/containers/podman/v4/libpod/define"
+	"github.com/containers/podman/v4/pkg/domain/entities"
 )
 
 func ulimits() []string {
@@ -25,7 +27,7 @@ func devices() []string {
 	return nil
 }
 
-func env() []string {
+func Env() []string {
 	if !registry.IsRemote() {
 		return containerConfig.Env()
 	}
@@ -73,3 +75,21 @@ func LogDriver() string {
 	}
 	return ""
 }
+
+// DefineCreateDefault is used to initialize ctr create options before flag initialization
+func DefineCreateDefaults(opts *entities.ContainerCreateOptions) {
+	opts.LogDriver = LogDriver()
+	opts.CgroupsMode = cgroupConfig()
+	opts.MemorySwappiness = -1
+	opts.ImageVolume = containerConfig.Engine.ImageVolumeMode
+	opts.Pull = policy()
+	opts.ReadOnlyTmpFS = true
+	opts.SdNotifyMode = define.SdNotifyModeContainer
+	opts.StopTimeout = containerConfig.Engine.StopTimeout
+	opts.Systemd = "true"
+	opts.Timezone = containerConfig.TZ()
+	opts.Umask = containerConfig.Umask()
+	opts.Ulimit = ulimits()
+	opts.SeccompPolicy = "default"
+	opts.Volume = volumes()
+}