centos 7.5安装docker-CE 18

1、查看系统版本

cat /etc/centos-release
CentOS Linux release 7.5.1804 (Core)
uname -r
3.10.0-862.el7.x86_64

2、安装yum源

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

　　如果找不到yum-config-manager：yum -y install yum-utils

3、更新源

yum makecache

4、安装docker-ce

yum install -y docker-ce

5、启动和停止服务

systemctl start docker
systemctl stop docker

　　采用官方方式安装compose

https://www.imooc.com/article/22933