docker机器助手 | docker-machine help
码头-机器帮助
Usage: docker-machine help [arg...]
Shows a list of commands or help for one command
用途：码头-机器帮助子命令
例如：
$ docker-machine help config
Usage: docker-machine config [OPTIONS] [arg...]
Print the connection config for machine
Description:
Argument is a machine name.
Options:
--swarm Display the Swarm config instead of the Docker daemon
