安装docker

1)下载docker-ce: https://mirrors.aliyun.com/docker-ce/linux/static/stable/x86_64/
如：wget https://mirrors.aliyun.com/docker-ce/linux/static/stable/x86_64/docker-26.1.3.tgz
2)

tar -xzvf docker-26.1.3.tgz
cd docker
cp -r ./* /usr/bin/

3) vi /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
ExecStart=/usr/bin/dockerd -H unix://var/run/docker.sock
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

4) 　

chmod +x /etc/systemd/system/docker.service
systemctl daemon-reload
systemctl start docker

=======
如果出现权限问题执行
setenforce 0
可以在/etc/docker/daemon.json 添加一下国内的docker 镜像地址
{
"registry-mirrors": ["https://sdf.aliyuncs.com"],
"data-root": "/mnt/dockerdata"
}