码头工人机器停止
Usage: docker-machine stop [arg...]
Gracefully Stop a machine
Description:
Argument(s) are one or more machine names.
例如：
$ docker-machine ls
NAME ACTIVE DRIVER STATE URL
dev * virtualbox Running tcp://192.168.99.104:2376
$ docker-machine stop dev
$ docker-machine ls
NAME ACTIVE DRIVER STATE URL
dev * virtualbox Stopped