版本：
docker20.10.7
docker-composev.2.16.0
安装docker
下载docker对应的安装包
Index of linux/static/stable/x86_64/
以安装 docker-20.10.7.tgz 为例
tar zxf docker-20.10.7.tgz
sudo cp docker/* /usr/bin/
sudo dockerd &
touch /usr/lib/systemd/system/docker.service
touch /etc/systemd/system/docker.service
cat > /etc/systemd/system/docker.service << EOF
[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
EOF
systemctl daemon-reload
#重载unit配置文件
systemctl start docker
#启动Docker
systemctl enable docker.service
#设置开机自启
systemctl status docker
#查看Docker状态
docker -v
#查看Docker版本
#install docker-compose
wget https://github.com/docker/compose/releases/download/v2.16.0/docker-compose-linux-x86_64
cp docker-compose-linux-x86_64 /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose