发布到DockerHub

DockerHub网址：https://hub.docker.com/

首先确保已经注册了账号，并登录成功；才能把自己的镜像发布到DockerHub上！

一、命令行代码登录

root@liang:/home/joila# docker login -h
Flag shorthand -h has been deprecated, please use --help

Usage:	docker login [OPTIONS] [SERVER]

Log in to a Docker registry.
If no server is specified, the default is defined by the daemon.

Options:
  -p, --password string   Password                      # 密码
      --password-stdin    Take the password from stdin
  -u, --username string   Username                      # 用户名