一、下载Docker（根据需求下载Docker版本） 下载地址：download.docker.com/linux/stati…
wget -c download.docker.com/linux/stati…
二、上传Docker包并解压
tar -zxvf docker-27.2.0.tgz
cp -r docker/* /usr/bin
三、编辑docker.service文件（注册成service，便于启动、停止、重启） 创建docker.service
vim /etc/systemd/system/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
# the default is not to use systemd for cgroups because the delegate issues still
# exists and systemd currently does not support the cgroup feature set required
# for containers run by docker
ExecStart=/usr/bin/dockerd
ExecReload=/bin/kill -s HUP $MAINPID
# Having non-zero Limit*s causes performance problems due to accounting overhead
# in the kernel. We recommend using cgroups to do container-local accounting.
LimitNOFILE=infinity
LimitNPROC=infinity
LimitCORE=infinity
# Uncomment TasksMax if your systemd version supports it.
# Only systemd 226 and above support this version.
#TasksMax=infinity
TimeoutStartSec=0
# set delegate yes so that systemd does not reset the cgroups of docker containers
Delegate=yes
# kill only the docker process, not all processes in the cgroup
KillMode=process
# restart the docker process if it exits prematurely
Restart=on-failure
StartLimitBurst=3
StartLimitInterval=60s
[Install]
WantedBy=multi-user.target
四、设置开机启动
## 添加可执行权限：
chmod +x /etc/systemd/system/docker.service
## 重载unit配置文件：
systemctl daemon-reload
## 启动docker：
systemctl start docker
## 设置开机自启动：
systemctl enable docker.service```
