Centos 7安装Docker

1 更新yum

[root@localhost ~]# yum update

1.1 如果配置了静态IP，请执行

[root@localhost ~]# echo nameserver 8.8.8.8 > /etc/resolv.conf  
[root@localhost ~]# echo nameserver 8.8.4.4 > /etc/resolv.conf 

2 编辑docker.repo文件

[root@localhost ~]# vi  /etc/yum.repos.d/docker.repo

3 按i粘贴以下代码：复制后一定要对比原文，因为编辑器带格式，复制时容易落下部分内容，复制分后一定要对比原文！！！

[dockerrepo]
name=Docker Repository
baseurl=https://yum.dockerproject.org/repo/main/centos/$releasever/
enabled=1
gpgcheck=1
gpgkey=https://yum.dockerproject.org/gpg

4 按Esc后，输入wq保存退出

5 安装docker

[root@localhost ~]# yum install docker-engine

6 启动docker

[root@localhost ~]# systemctl start docker

7 开机启动docker

[root@localhost ~]# systemctl enable docker

8 停止docker

[root@localhost ~]# systemctl stop docker