安装 docker

tar -xvf docker-20.10.17.tgz
cp docker/* /usr/bin/
docker --version

配置开机启动

cd /usr/lib/systemd/system

创建 docker.service

[Unit]
Description=Docker Application Container Engine
Documentation=https://docs.docker.com
After=network-online.target firewalld.service
Wants=network-online.target

[Service]
Type=notify
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
LimitNOFILE=infinity
LimitNPROC=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

配置镜像

1. 新建 /etc/docker/daemon.json 文件
2. 写入下述配置：

   {
   "registry-mirrors": ["https://registry.docker-cn.com","https://docker.mirrors.ustc.edu.cn","https://hub-mirror.c.163.com","http://f1361db2.m.daocloud.io"]
   }

3. 重启docker

   systemctl daemon-reload
   systemctl restart docker