arch linux 安装、启动docker步骤如下：
pacman -S docker
systemctl enable docker.service
systemctl start docker.service
报错如下：
Job for docker.service failed because the control process exited with error code. See "systemctl status docker.service" and "journalctl -xeu docker.service" for details
systemctl status报错信息：
systemctl status docker.service
× docker.service - Docker Application Container Engine
Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Sat 2021-07-03 00:31:46 CEST; 2min 39s ago
TriggeredBy: × docker.socket
Docs: https://docs.docker.com
Process: 126666 ExecStart=/usr/bin/dockerd -H fd:// (code=exited, status=1/FAILURE)
Main PID: 126666 (code=exited, status=1/FAILURE)
CPU: 180ms
Jul 03 00:31:46 ws systemd[1]: docker.service: Scheduled restart job, restart counter is at 3.
Jul 03 00:31:46 ws systemd[1]: Stopped Docker Application Container Engine.
Jul 03 00:31:46 ws systemd[1]: docker.service: Start request repeated too quickly.
Jul 03 00:31:46 ws systemd[1]: docker.service: Failed with result 'exit-code'.
Jul 03 00:31:46 ws systemd[1]: Failed to start Docker Application Container Engine.
解决方法：重启一下就好。。。mdzz
参考 [SOLVED] Can’t start docker.service
