Added support for setting OS version in docker manifest annotate.

Signed-off-by: Saswat Bhattacharya <sas.saswat@gmail.com>

cli/command/manifest/annotate.go

@@ -18,6 +18,7 @@ type annotateOptions struct {
 	os         string
 	arch       string
 	osFeatures []string
+	osVersion  string
 }
 
 // NewAnnotateCommand creates a new `docker manifest annotate` command
@@ -39,6 +40,7 @@ func newAnnotateCommand(dockerCli command.Cli) *cobra.Command {
 
 	flags.StringVar(&opts.os, "os", "", "Set operating system")
 	flags.StringVar(&opts.arch, "arch", "", "Set architecture")
+	flags.StringVar(&opts.osVersion, "os-version", "", "Set operating system version")
 	flags.StringSliceVar(&opts.osFeatures, "os-features", []string{}, "Set operating system feature")
 	flags.StringVar(&opts.variant, "variant", "", "Set architecture variant")
 
@@ -80,6 +82,9 @@ func runManifestAnnotate(dockerCli command.Cli, opts annotateOptions) error {
 	if opts.variant != "" {
 		imageManifest.Descriptor.Platform.Variant = opts.variant
 	}
+	if opts.osVersion != "" {
+		imageManifest.Descriptor.Platform.OSVersion = opts.osVersion
+	}
 
 	if !isValidOSArch(imageManifest.Descriptor.Platform.OS, imageManifest.Descriptor.Platform.Architecture) {
 		return errors.Errorf("manifest entry for image has unsupported os/arch combination: %s/%s", opts.os, opts.arch)

cli/command/manifest/annotate_test.go

@@ -58,6 +58,7 @@ func TestManifestAnnotate(t *testing.T) {
 	cmd.SetArgs([]string{"example.com/list:v1", "example.com/alpine:3.0"})
 	cmd.Flags().Set("os", "freebsd")
 	cmd.Flags().Set("arch", "fake")
+	cmd.Flags().Set("os-version", "1")
 	cmd.Flags().Set("os-features", "feature1")
 	cmd.Flags().Set("variant", "v7")
 	expectedError = "manifest entry for image has unsupported os/arch combination"

cli/command/manifest/testdata/inspect-annotate.golden

@@ -7,6 +7,7 @@
 		"platform": {
 			"architecture": "arm",
 			"os": "freebsd",
+			"os.version": "1",
 			"os.features": [
 				"feature1"
 			],

docs/reference/commandline/manifest.md

@@ -77,6 +77,7 @@ Options:
       --arch string               Set architecture
       --help                      Print usage
       --os string                 Set operating system
+      --os-version string         Set operating system version
       --os-features stringSlice   Set operating system feature
       --variant string            Set architecture variant