/root/.hushlogin file.
root@DESKTOP-K529L3B:~# docker ps -a
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
root@DESKTOP-K529L3B:~# systemctl start docker
System has not been booted with systemd as init system (PID 1). Can’t operate.
Failed to connect to bus: Host is down
root@DESKTOP-K529L3B:~# sudo service docker start
* Starting Docker: docker [ OK ]
root@DESKTOP-K529L3B:~# docker ps -a
使用命令错误
sudo service docker start
启动成功
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