systemctl start docker 실패 문의

강의 내용에 있는 3가지 방법의 SSH 서버 (with 도커) 실행 명령어로 docker를 내려받은 후 'systemctl start docker' 명령어 실행 시 오류가 발생합니다.

(3가지 방법으로 대여섯번은 삭제 - 재설치를 해봤는데도 오류가 발생하네요)

조치방법 가이드 부탁드립니다.

오류내용 :

[root@36763f673338 ~]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; disabled; vendor preset: disabled)
   Active: inactive (dead)
     Docs: https://docs.docker.com
[root@36763f673338 ~]# systemctl enable docker
Created symlink /etc/systemd/system/multi-user.target.wants/docker.service → /usr/lib/systemd/system/docker.service.
[root@36763f673338 ~]# systemctl start docker
A dependency job for docker.service failed. See 'journalctl -xe' for details.
[root@36763f673338 ~]# systemctl status docker
● docker.service - Docker Application Container Engine
   Loaded: loaded (/usr/lib/systemd/system/docker.service; enabled; vendor preset: disabled)
   Active: inactive (dead)
     Docs: https://docs.docker.com

May 10 00:40:17 36763f673338 systemd[1]: Dependency failed for Docker Application Container Engine.
May 10 00:40:17 36763f673338 systemd[1]: docker.service: Job docker.service/start failed with result 'dependency'.
[root@36763f673338 ~]# dockerd -D
INFO[2023-05-10T00:40:35.660677600Z] Starting up
failed to load listeners: can't create unix socket /var/run/docker.sock: device or resource busy