image: Add convert command

cli/command/image/cmd.go

@@ -27,6 +27,7 @@ func NewImageCommand(dockerCli command.Cli) *cobra.Command {
 		newRemoveCommand(dockerCli),
 		newInspectCommand(dockerCli),
 		NewPruneCommand(dockerCli),
+		NewConvertCommand(dockerCli),
 	)
 	return cmd
 }

cli/command/image/convert.go

@@ -0,0 +1,83 @@
+package image
+
+import (
+	"context"
+	"fmt"
+
+	"github.com/containerd/platforms"
+	"github.com/distribution/reference"
+	"github.com/docker/cli/cli"
+	"github.com/docker/cli/cli/command"
+	imagetypes "github.com/docker/docker/api/types/image"
+	"github.com/spf13/cobra"
+)
+
+type convertArgs struct {
+	Src                    string
+	Dst                    []string
+	Platforms              []string
+	NoAttestations         bool
+	OnlyAvailablePlatforms bool
+}
+
+func NewConvertCommand(dockerCli command.Cli) *cobra.Command {
+	var args convertArgs
+
+	cmd := &cobra.Command{
+		Use:   "convert [OPTIONS]",
+		Short: "Convert multi-platform images",
+		Args:  cli.ExactArgs(0),
+		RunE: func(cmd *cobra.Command, _ []string) error {
+			return runConvert(cmd.Context(), dockerCli, args)
+		},
+		Aliases: []string{"convert"},
+		Annotations: map[string]string{
+			"aliases": "docker image convert, docker convert",
+		},
+	}
+
+	flags := cmd.Flags()
+	flags.StringArrayVar(&args.Platforms, "platforms", nil, "Include only the specified platforms in the destination image")
+	flags.BoolVar(&args.NoAttestations, "no-attestations", false, "Do not include image attestations")
+	flags.BoolVar(&args.OnlyAvailablePlatforms, "available", false, "Only include platforms locally available to the daemon")
+	flags.StringArrayVar(&args.Dst, "to", nil, "Target image references")
+	flags.StringVar(&args.Src, "from", "", "Source image reference")
+
+	return cmd
+}
+
+func runConvert(ctx context.Context, dockerCLI command.Cli, args convertArgs) error {
+	if len(args.Dst) == 0 {
+		return fmt.Errorf("No destination image specified")
+	}
+	if args.Src == "" {
+		return fmt.Errorf("No source image specified")
+	}
+
+	var dstRefs []reference.NamedTagged
+	for _, dst := range args.Dst {
+		dstRef, err := reference.ParseNormalizedNamed(dst)
+		if err != nil {
+			return fmt.Errorf("invalid destination image reference: %s: %w", dst, err)
+		}
+
+		dstRef = reference.TagNameOnly(dstRef)
+		dstRefTagged := dstRef.(reference.NamedTagged)
+		dstRefs = append(dstRefs, dstRefTagged)
+	}
+
+	opts := imagetypes.ConvertOptions{
+		NoAttestations:         args.NoAttestations,
+		OnlyAvailablePlatforms: args.OnlyAvailablePlatforms,
+	}
+
+	for _, platform := range args.Platforms {
+		p, err := platforms.Parse(platform)
+		if err != nil {
+			return err
+		}
+		opts.Platforms = append(opts.Platforms, p)
+	}
+
+	return dockerCLI.Client().ImageConvert(ctx, args.Src, dstRefs, opts)
+}

vendor.mod

@@ -6,6 +6,8 @@ module github.com/docker/cli
 
 go 1.21.0
 
+replace github.com/docker/docker => github.com/vvoland/moby v20.10.3-0.20240604094150-006d93e1b557+incompatible
+
 require (
 	dario.cat/mergo v1.0.0
 	github.com/containerd/platforms v0.2.0

vendor.sum

@@ -59,8 +59,6 @@ github.com/distribution/reference v0.5.0/go.mod h1:BbU0aIcezP1/5jX/8MP0YiH4SdvB5
 github.com/docker/distribution v2.7.1+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
 github.com/docker/distribution v2.8.3+incompatible h1:AtKxIZ36LoNK51+Z6RpzLpddBirtxJnzDrHLEKxTAYk=
 github.com/docker/distribution v2.8.3+incompatible/go.mod h1:J2gT2udsDAN96Uj4KfcMRqY0/ypR+oyYUYmja8H+y+w=
-github.com/docker/docker v26.1.1-0.20240603220541-cd3804655a25+incompatible h1:mzBHld522snTZ7BoMQiw0RXTdraVMr380QGZzGsPRqI=
-github.com/docker/docker v26.1.1-0.20240603220541-cd3804655a25+incompatible/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/docker/docker-credential-helpers v0.8.2 h1:bX3YxiGzFP5sOXWc3bTPEXdEaZSeVMrFgOr3T+zrFAo=
 github.com/docker/docker-credential-helpers v0.8.2/go.mod h1:P3ci7E3lwkZg6XiHdRKft1KckHiO9a2rNtyFbZ/ry9M=
 github.com/docker/go v1.5.1-1.0.20160303222718-d30aec9fd63c h1:lzqkGL9b3znc+ZUgi7FlLnqjQhcXxkNM/quxIjBVMD0=
@@ -273,6 +271,8 @@ github.com/theupdateframework/notary v0.7.1-0.20210315103452-bf96a202a09a h1:tlJ
 github.com/theupdateframework/notary v0.7.1-0.20210315103452-bf96a202a09a/go.mod h1:Y94A6rPp2OwNfP/7vmf8O2xx2IykP8pPXQ1DLouGnEw=
 github.com/tonistiigi/go-rosetta v0.0.0-20200727161949-f79598599c5d h1:wvQZpqy8p0D/FUia6ipKDhXrzPzBVJE4PZyPc5+5Ay0=
 github.com/tonistiigi/go-rosetta v0.0.0-20200727161949-f79598599c5d/go.mod h1:xKQhd7snlzKFuUi1taTGWjpRE8iFTA06DeacYi3CVFQ=
+github.com/vvoland/moby v20.10.3-0.20240604094150-006d93e1b557+incompatible h1:uHYnyXiVobDAK6nBmqtOv5/uKMekwKkk9YkLh0m+rbs=
+github.com/vvoland/moby v20.10.3-0.20240604094150-006d93e1b557+incompatible/go.mod h1:nLN96xVmxZq8CPEl0UgxMpO/G2e8MQtjhAdlRDUdBi0=
 github.com/weppos/publicsuffix-go v0.15.1-0.20210511084619-b1f36a2d6c0b h1:FsyNrX12e5BkplJq7wKOLk0+C6LZ+KGXvuEcKUYm5ss=
 github.com/weppos/publicsuffix-go v0.15.1-0.20210511084619-b1f36a2d6c0b/go.mod h1:HYux0V0Zi04bHNwOHy4cXJVz/TQjYonnF6aoYhj+3QE=
 github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=