code: func ConfigCommand(factory app.ProjectFactory) cli.Command {
  	return cli.Command{
  		Name:   "config",
  		Usage:  "Validate and view the compose file.",
  		Action: app.WithProject(factory, app.ProjectConfig),
  		Flags: []cli.Flag{
  			cli.BoolFlag{
  				Name:  "quiet,q",
  				Usage: "Only validate the configuration, don't print anything.",
  			},
  		},
  	}
  }
docs: // ConfigCommand defines the libcompose config subcommand