1. yum -y install gcc
2. yum -y install gcc-c++
3. yum install -y yum-utils
4. yum-config-manager —add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
5. yum makecache fast
6. yum -y install docker-ce docker-ce-cli containerd.io
7. systemctl start docker
8. docker version
9. ps -ef|grep docker
10. docker run hello-world
11. 配置镜像加速器
    1. mkdir -p /etc/docker
    2. tee /etc/docker/daemon.json <<-‘EOF’
       {
       “registry-mirrors”: [“https://afiyusyw.mirror.aliyuncs.com“]
       }
       EOF
12. Systemctl restart docker 重启
13. systemctl daemon-reload 重新加载服务配置文件