离线安装docker

1、下载地址：https://download.docker.com/linux/static/stable/x86_64/

2、下载下来的包上传解压

 tar -xvzf docker-18.03.1-ce.tgz -C /DATA/

3、将解压出来的docker文件内容移动到 /usr/bin/ 目录下

cp /DATA/docker/* /usr/bin

4、将docker注册为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

5、启动docker

将docker.service赋予可执行权限

chmod -R 775 /etc/systemd/system/docker.service

重新加载配置文件

systemctl daemon-reload

启动：systemctl start docker

设置开机自启：systemctl enable docker.service 

查看Docker状态：systemctl status docker

查看Docker版本：docker -v