Linux离线安装Docker

1. 安装包官方网址：https://download.docker.com/linux/static/stable/x86_64/

将下载好的Docker包通过ftp上传到Linux中

2. 解压上传好的Docker包

	tar -zxvf docker-18.06.3-ce.tgz

3. 将解压出来的docker文件复制到 /usr/bin/ 目录下

	cp docker/* /usr/bin/

4. 在/etc/systemd/system/目录下新增docker.service文件，将docker注册为service服务，方便设置开机自启

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

5. 给service文件运行权限

	chmod +x /etc/systemd/system/docker.service 

6. 重新加载配置文件（每次有修改docker.service文件时都要重新加载下）

	systemctl daemon-reload  

7. 设置Docker为开机自启

	systemctl enable docker.service

8. 启动Docker容器

	systemctl start docker

9. 查看当前Docker运行状态

	systemctl status docker