用户组

查看当前运行的容器：

$ docker ps

报错：

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.27/containers/json: dial unix /var/run/docker.sock: connect: permission denied

 

解决办法：执行docker命令时如果发生以下错误，则修改/var/run/docker.sock权限

sudo chmod a+rw /var/run/docker.sock