在执行docker stop时尝试连接到Docker守护进程套接字时获得的权限被拒绝
问题描述：
我在docker上运行了3个容器，我需要使用以下命令停止所有容器：
I have 3 containers running on my docker, and I need to stop all of them using the following:
sudo docker stop $(docker ps -q)
在运行命令时，我收到以下消息：
When a run the command I got this message:
Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.32/containers/json: dial unix /var/run/docker.sock: connect: permission denied
See 'docker stop --help'.
Usage: docker stop [OPTIONS] CONTAINER [CONTAINER...]
Stop one or more running containers
我进行了一些搜索，但消息显示的情况不适用于我的环境。我在Docker版本17.09.0-ce中使用Ubuntu 16.04 LTS，构建afdb6d4
I made some search, and the cases that message show does not apply to my environment. I'm using Ubuntu 16.04 LTS with Docker version 17.09.0-ce, build afdb6d4
此消息是什么意思？
答
似乎您的用户无法使用 docker 命令，因此您需要通过 sudo运行它也在括号中：
It seems your user cannot use docker command, so you need to run it via sudo in parentheses as well:
sudo docker stop $(sudo docker ps -q)