Docker“Got permission denied while trying to connect to the Docker daemon socket“问题

错误现象 :

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.24/images/create?fromImage=mongo&tag=latest: dial unix /var/run/docker.sock: connect: permission denied

# 添加docker用户组
sudo groupadd docker# 检测当前用户是否已经在docker用户组中，其中XXX为用户名，例如我的，cpucode 
sudo gpasswd -a $cpucode docker# 将当前用户添加至docker用户组
sudo gpasswd -a $USER docker# 更新docker用户组
newgrp docker

#查看
docker version