Linux离线安装docker 并导入导出镜像

离线安装非常简单，将docker安装包下载完上传至服务器，配置一下启动服务即可。

1、docker官网下载安装文件
https://download.docker.com/linux/static/stable/x86_64/

2、安装
下载docker-19.03.5.tgz后上传到要安装到服务器上
tar -zxvf docker-19.03.5.tgz
cp docker/* /usr/bin/
3、配置系统服务
(1)vi /etc/systemd/system/docker.service
(2)docker.service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
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

(3)修改文件权限
chmod +x /etc/systemd/system/docker.service
(4)设置Docker容器日志文件大小限制

vi /etc/docker/daemon.json

{
  "log-driver":"json-file",
  "log-opts": {"max-s