Function newSaveCommand

cli/command/image/save.go:26–52

newSaveCommand creates a new "docker image save" command.

(dockerCLI command.Cli)

// newSaveCommand creates a new "docker image save" command.
func newSaveCommand(dockerCLI command.Cli) *cobra.Command {
	var opts saveOptions

	cmd := &cobra.Command{
		Use:   "save [OPTIONS] IMAGE [IMAGE...]",
		Short: "Save one or more images to a tar archive (streamed to STDOUT by default)",
		Args:  cli.RequiresMinArgs(1),
		RunE: func(cmd *cobra.Command, args []string) error {
			opts.images = args
			return runSave(cmd.Context(), dockerCLI, opts)
		},
		Annotations: map[string]string{
			"aliases": "docker image save, docker save",
		},
		ValidArgsFunction:     completion.ImageNames(dockerCLI, -1),
		DisableFlagsInUseLine: true,
	}

	flags := cmd.Flags()

	flags.StringVarP(&opts.output, "output", "o", "", "Write to a file, instead of STDOUT")
	flags.StringSliceVar(&opts.platform, "platform", []string{}, `Save only the given platform(s). Formatted as a comma-separated list of "os[/arch[/variant]]" (e.g., "linux/amd64,linux/arm64/v8")`)
	_ = flags.SetAnnotation("platform", "version", []string{"1.48"})

	_ = cmd.RegisterFlagCompletionFunc("platform", completion.Platforms())
	return cmd
}

// runSave performs a save against the engine based on the specified options
func runSave(ctx context.Context, dockerCLI command.Cli, opts saveOptions) error {