docker installation

• 安装之前你必须是root用户，否则是无法安装的，执行命令安装

# yum install docker

• 查看安装的docker版本

[docker@localhost ~]$ docker -v
Docker version 1.12.6, build 85d7426/1.12.6

• start docker, maybe password is needed

[docker@localhost ~]$ service docker start
Redirecting to /bin/systemctl start docker.service

• run docker "hello-world" to see if it will work

[docker@localhost ~]$ docker run hello-world

Hello from Docker!
This message shows that your installation appears to be working correctly.

• 查看当前docker信息

$ docker info