centos 离线环境安装docker

1.下载docker

https://download.docker.com/linux/static/stable/x86_64/docker-23.0.1.tgz

其他版本在上级目录选择下载https://download.docker.com/linux/static/stable/x86_64/
2.下载的文件上传到centos服务器上并解压

 tar -zxvf docker-23.0.1.tgz

3.复制解压目录中的文件到/usr/bin下

cp docker/* /usr/bin

4.创建docker服务
创建文件并写入vim /etc/systemd/system/docker.service 下面内容

[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 --selinux-enabled=false --insecure-registry=127.0.0.1
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

5.给文件设置权限

chmod 777 /etc/systemd/system/docker.service

6.重启daemon-reload

systemctl daemon-reload

执行后docker就安装完成
docker version可以查看版本，
关闭防火墙，不关影响容器远程连接
systemctl stop firewalld
systemctl disable firewalld
启动docker
systemctl start docker
systemctl enable docker 开机自启docker

docker load -i xxx.tar 加载本地镜像
这边提供一个下载镜像的网站 https://pull.7ii.win/
可以搜索下载镜像到本地