docker安装

1.https://docs.docker.com/engine/install/ubuntu/
关键命令 sudo apt-get install docker-ce=5:18.09.9_3-0ubuntu-bionic docker-ce-cli=5:18.09.9_3-0ubuntu-bionic containerd.io
2. https://cr.console.aliyun.com/cn-hangzhou/instances/mirrors 配置aliyun-repo镜像仓库