code: func installConfigFlags(conf *config.Config, flags *pflag.FlagSet) error {
  	// First handle install flags which are consistent cross-platform
  	if err := installCommonConfigFlags(conf, flags); err != nil {
  		return err
  	}
  
  	// Then platform-specific install flags.
  	flags.StringVar(&conf.BridgeConfig.FixedCIDR, "fixed-cidr", "", "IPv4 subnet for fixed IPs")
  	flags.StringVarP(&conf.BridgeConfig.Iface, "bridge", "b", "", "Attach containers to a virtual switch")
  	flags.StringVarP(&conf.SocketGroup, "group", "G", "", "Users or groups that can access the named pipe")
  	return nil
  }
docs: // installConfigFlags adds flags to the pflag.FlagSet to configure the daemon