Mar 03 00:47:13 lmtest-u18 systemd[1]: docker.service: Start request
Mar 03 00:47:13 lmtest-u18 systemd[1]: Failed to start Docker Applica
-- Subject: Unit docker.service has failed
-- Defined-By: systemd
-- Support: http://lists.freedesktop.org/mailman/listinfo/systemd-dev
--
-- Unit docker.service has failed.
--
-- The result is failed.
Mar 03 00:47:13 lmtest-u18 systemd[1]: docker.socket: Unit entered fa
Mar 03 00:47:13 lmtest-u18 systemd[1]: docker.service: Failed with re

root@lmtest-u18:~# systemctl unmask docker.service
root@lmtest-u18:~# systemctl unmask docker.socket
root@lmtest-u18:~# systemctl start docker.service
root@lmtest-u18:~# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/lib/systemd/system/docker.service; enabled; vendo
   Active: active (running) since Wed 2021-03-03 00:48:30 UTC; 10s ag
     Docs: https://docs.docker.com
 Main PID: 26150 (dockerd)
    Tasks: 27
   Memory: 48.2M
      CPU: 232ms