code: func newDialStdioCommand(dockerCli command.Cli) *cobra.Command {
  	cmd := &cobra.Command{
  		Use:    "dial-stdio",
  		Short:  "Proxy the stdio stream to the daemon connection. Should not be invoked manually.",
  		Args:   cli.NoArgs,
  		Hidden: true,
  		RunE: func(cmd *cobra.Command, args []string) error {
  			return runDialStdio(dockerCli)
  		},
  	}
  	return cmd
  }
docs: // newDialStdioCommand creates a new cobra.Command for `docker system dial-stdio`