If you would like to use Docker as a non-root user, you should now consider
adding your user to the “docker” group with something like:
sudo usermod -aG docker $your_user
Remember that you will have to log out and back in for this to take effect!
将docker.socket访问权限设置为660将其所属用户组设为docker,非root用户只要加入docker用户组可无需root权限运行docker命令．