一、下载docker的二进制包

https://download.docker.com/linux/static/edge/x86_64

# wget   https://download.docker.com/linux/static/edge/x86_64/docker-18.04.0-ce.tgz

二、解压拷贝

# tar -zxvf docker-17.04.0-ce.tgz

# cp ./docker/docker*  /usr/bin/

三、 创建服务文件

# vim /etc/systemd/system/docker.service

服务文件内容如下(其中引用了一个环境变量文件/etc/default/docker)

##############################################

[Unit]

Description=Docker Application Container Engine

Documentation=https://docs.docker.com

After=network-online.target firewalld.service

Wants=network-online.target

[Service]

Type=notify

EnvironmentFile=-/etc/default/docker 

ExecStart=/usr/bin/dockerd  \

             --data-root=/opt/docker_run \

              --bip=172.18.0.1/16 \

              -H tcp://0.0.0.0:2375 \

              -H unix:///var/run/docker.sock 

ExecReload=/bin/kill -s HUP $MAINPID

[Install]

WantedBy=multi-user.target

##############################################

四、启动docker服务并设为开机自启

# systemctl daemon-reload

# systemctl start docker

# systemctl enable docker

# docker  info

# docker  version

五、参考

https://download.docker.com/linux/static/edge/x86_64

https://docs.docker.com/engine/reference/commandline/dockerd