0.更新yum
yum -y update
1.手动安装container.io
yum install -y https://mirrors.aliyun.com/docker-ce/linux/centos/8/x86_64/edge/Packages/containerd.io-1.3.7-3.1.el8.x86_64.rpm
2.安装一些依赖
yum install -y yum-utils device-mapper-persistent-data lvm2 yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
3. 安装docker
yum install -y docker-ce
4.启动docker
systemctl start docker
5. 查看版本
docker version
6. 测试
docker run hello-world
