下载Docker离线安装包

从官网下载：https://download.docker.com/linux/static/stable/x86_64/

在有网络的机器上下载

wget https://download.docker.com/linux/static/stable/x86_64/docker-20.10.9.tgz

传输到目标机器并安装

解压

tar xzvf docker-20.10.9.tgz

复制二进制文件到系统路径

sudo cp docker/* /usr/bin/

创建systemd服务文件

sudo vi /etc/systemd/system/docker.service
创建docker.service文件
内容如下：

ini
[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
LimitCORE=infinity
TimeoutStartSec=0
Delegate=yes
KillMode=process
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s

[Install]
WantedBy=multi-user.target

授权服务

sudo chmod 777 /var/run/docker.sock

启动Docker服务

sudo systemctl daemon-reload
sudo systemctl start docker
sudo systemctl enable docker