Docker 问题

问题描述：Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?

昨天还好好的，重启电脑不行了。可能需要重启一下docker

[root@localhost ~]# docker ps -a
Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?
[root@localhost ~]# systemctl start docker
[root@localhost ~]# docker ps -a
CONTAINER ID   IMAGE               COMMAND                  CREATED        STATUS                    PORTS     NAMES
e91d88e285c7   dockerdemo:latest   "dotnet DockerDemo.d…"   23 hours ago   Exited (0) 23 hours ago             dockerdemo
[root@localhost ~]#