3 files changed, 15 insertions, 6 deletions
diff --git a/pkg/specgen/generate/container_create.go b/pkg/specgen/generate/container_create.go
index 105e36bc6..f051537de 100644
--- a/pkg/specgen/generate/container_create.go
+++ b/pkg/specgen/generate/container_create.go
@@ -4,6 +4,7 @@ import (
 	"context"
 	"os"
 	"path/filepath"
+	"strings"
 
 	"github.com/containers/common/pkg/config"
 	"github.com/containers/podman/v2/libpod"
@@ -91,11 +92,19 @@ func MakeContainer(ctx context.Context, rt *libpod.Runtime, s *specgen.SpecGener
 		if err != nil {
 			return nil, err
 		}
-		imgName := s.Image
-		names := newImage.Names()
-		if len(names) > 0 {
-			imgName = names[0]
+		// If the input name changed, we could properly resolve the
+		// image. Otherwise, it must have been an ID where we're
+		// defaulting to the first name or an empty one if no names are
+		// present.
+		imgName := newImage.InputName
+		if s.Image == newImage.InputName && strings.HasPrefix(newImage.ID(), s.Image) {
+			imgName = ""
+			names := newImage.Names()
+			if len(names) > 0 {
+				imgName = names[0]
+			}
 		}
+
 		options = append(options, libpod.WithRootFSFromImage(newImage.ID(), imgName, s.RawImageName))
 	}
 	if err := s.Validate(); err != nil {
diff --git a/pkg/specgen/generate/namespaces.go b/pkg/specgen/generate/namespaces.go
index 7adb8be6a..7e4f09dc4 100644
--- a/pkg/specgen/generate/namespaces.go
+++ b/pkg/specgen/generate/namespaces.go
@@ -342,7 +342,7 @@ func specConfigureNamespaces(s *specgen.SpecGenerator, g *generate.Generator, rt
 				return errors.Wrapf(err, "error looking up container to share uts namespace with")
 			}
 			hostname = utsCtr.Hostname()
-		case s.NetNS.NSMode == specgen.Host || s.UtsNS.NSMode == specgen.Host:
+		case (s.NetNS.NSMode == specgen.Host && hostname == "") || s.UtsNS.NSMode == specgen.Host:
 			tmpHostname, err := os.Hostname()
 			if err != nil {
 				return errors.Wrap(err, "unable to retrieve hostname of the host")
diff --git a/pkg/specgen/generate/oci.go b/pkg/specgen/generate/oci.go
index f02432f5b..8454458a8 100644
--- a/pkg/specgen/generate/oci.go
+++ b/pkg/specgen/generate/oci.go
@@ -110,7 +110,7 @@ func makeCommand(ctx context.Context, s *specgen.SpecGenerator, img *image.Image
 	// Only use image command if the user did not manually set an
 	// entrypoint.
 	command := s.Command
-	if command == nil && img != nil && s.Entrypoint == nil {
+	if (command == nil || len(command) == 0) && img != nil && (s.Entrypoint == nil || len(s.Entrypoint) == 0) {
 		newCmd, err := img.Cmd(ctx)
 		if err != nil {
 			return nil, err