Docker Hub

Docker Hub有两种类型的仓库：

• 用户仓库：由用户创建
• 顶层仓库：有Docker内部的工作人员创建并维护

docker hub注册

到官网注册：https://hub.docker.com/

在终端登录docker hub

$ sudo docker login
Login with your Docker ID to push and pull images from Docker Hub. If you don't have a Docker ID, head over to https://hub.docker.com to create one.
Username: xxxx
Password:

输完上述内容后：

WARNING! Your password will be stored unencrypted in /root/.docker/config.json.
Configure a credential helper to remove this warning. See
https://docs.docker.com/engine/reference/commandline/login/#credentials-store
​
Login Succeeded # 登录成功
[root@iz2zeg7ic2tskdsisgdkfhz ~]# 

密码会保存在/root/.docker/config.json文件中。