下载二进制资源：

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

解压tar包

tar fzvx docker-19.03.4.tgz

cp -r ./docker/* /usr/bin/

使用systemctl系统服务管理docker

vim /usr/lib/systemd/system/docker.service

[Unit]

Description=Docker Application Container Engine

Documentation=https://docs.docker.com

After=network-online.target firewalld.service containerd.service

Wants=network-online.target

[Service]

Type=notify

ExecStart=/usr/bin/dockerd --graph /log/docker-data/ 

ExecReload=/bin/kill -s HUP $MAINPID

TimeoutSec=0

RestartSec=2

Restart=always

StartLimitBurst=3

StartLimitInterval=60s

LimitNOFILE=infinity

LimitNPROC=infinity

LimitCORE=infinity

TasksMax=infinity

Delegate=yes

KillMode=process

[Install]

WantedBy=multi-user.target

创建daemon.json文件

vim /etc/docker/daemon.json

{}

启动docker

systemctl daemon-reload

systemctl start docker

docker ps 出现

Cannot connect to the Docker daemon at tcp://localhost:2375. Is the docker daemon running?

在/etc/bashrc末尾添加完毕后使文件生效source /etc/bashrc

export DOCKER_HOST='unix:///var/run/docker.sock'