CenOS7安装Docker

每次安装都要去看官方文档，比较烦。所以把官网的搬过来。官网链接：https://docs.docker.com/install/linux/docker-ce/centos/

1#卸载已有的Docker
2sudo yum remove docker \
3                  docker-client \
4                  docker-client-latest \
5                  docker-common \
6                  docker-latest \
7                  docker-latest-logrotate \
8                  docker-logrotate \
9                  docker-engine
10
11#依赖安装
12
13sudo yum install -y yum-utils \
14  device-mapper-persistent-data \
15  lvm2
16
17#增加YUM源
18
19sudo yum-config-manager \
20    --add-repo \
21    https://download.docker.com/linux/centos/docker-ce.repo
22
23#启用YUM源
24sudo yum-config-manager --enable docker-ce-nightly
25
26#安装
27sudo yum install docker-ce docker-ce-cli containerd.io
28
29#启用服务
30sudo systemctl start docker
31
32#测试
33sudo docker run hello-world