1、卸载系统之前的docker

yum remove docker \
docker-client \
docker-client-latest \
docker-common \
docker-latest \
docker-latest-logrotate \
docker-logrotate \
docker-engine

2、设置安装地址

sudo yum install –y yum-utils device-mapper-persistent-data lvm2

yum-config-manager \
–add-repo \
https://download.docker.com/linux/centos/docker-ce.repo

或

sudo yum-config-manager –add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo （阿里仓库）

更新yum索引列表并安装Docker引擎

sudo yum makecache fast

3、安装

sudo yum install docker-ce docker-ce-cli

4、启动

sudo systemctl start docker

自动启动

sudo systemctl enable docker