vi /etc/systemd/system/docker.service

[Unit]

[Service]

Type=notify

ExecStart=/usr/bin/dockerd

ExecReload=/bin/kill -s HUP $MAINPID

Restart=always

StartLimitBurst=3

StartLimtInterval=60s

[Install]

WantedBy=multi-user.target

systemctl daemon-reload

systemctl start docker 

docker ps 

docker run hello-world

已解决