Support pushing a specific platform of a multi-architecture docker image to a registry
@@ -29,6 +29,7 @@ import (
"github.com/containerd/containerd/images"
"github.com/containerd/containerd/log"
"github.com/containerd/containerd/pkg/progress"
+ "github.com/containerd/containerd/platforms"
"github.com/containerd/containerd/remotes"
"github.com/containerd/containerd/remotes/docker"
digest "github.com/opencontainers/go-digest"
@@ -58,6 +59,10 @@ var pushCommand = cli.Command{
Name: "manifest-type",
Usage: "media type of manifest digest",
Value: ocispec.MediaTypeImageManifest,
+ }, cli.StringSliceFlag{
+ Name: "platform",
+ Usage: "push content from a specific platform",
+ Value: &cli.StringSlice{},
}),
Action: func(context *cli.Context) error {
var (
@@ -91,6 +96,27 @@ var pushCommand = cli.Command{
return errors.Wrap(err, "unable to resolve image to manifest")
}
desc = img.Target
+
+ if pss := context.StringSlice("platform"); len(pss) == 1 {
+ p, err := platforms.Parse(pss[0])
+ if err != nil {
+ return errors.Wrapf(err, "invalid platform %q", pss[0])
+ }
+
+ cs := client.ContentStore()
+ if manifests, err := images.Children(ctx, cs, desc); err == nil && len(manifests) > 0 {
+ matcher := platforms.NewMatcher(p)
+ for _, manifest := range manifests {
+ if manifest.Platform != nil && matcher.Match(*manifest.Platform) {
+ if _, err := images.Children(ctx, cs, manifest); err != nil {
+ return errors.Wrap(err, "no matching manifest")
+ }
+ desc = manifest
+ break
+ }
+ }
+ }
+ }
}
resolver, err := commands.GetResolver(ctx, context)
