centos docker 安装 参考网站 https://docs.docker.com/install/linux/docker-ce/centos/
$ sudo yum remove docker docker-client docker-client-latest docker-common docker-latest docker-latest-logrotate docker-logrotate docker-engine
$ sudo yum install -y yum-utils device-mapper-persistent-data lvm2
$ sudo yum-config-manager --add-repo http://mirrors.aliyun.com/docker-ce/linux/centos/docker-ce.repo
$ sudo yum install -y docker-ce docker-ce-cli containerd.io
每一行分别代表的意思：创建文件夹，将163写入文件中，重新加载文件，启动docker，查看docker信息
mkdir -p /etc/docker echo ‘{"registry-mirrors": ["http://hub-mirror.c.163.com"] }‘ > /etc/docker/daemon.json systemctl daemon-reload systemctl start docker docker info
systemctl stop docker yum -y remove docker-ce rm -rf /var/lib/docker rm -rf /etc/docker
原文：https://www.cnblogs.com/shaolixin/p/10689917.html