执行 docker ps 出现如下错误：

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.40/containers/json: dial unix /var/run/docker.sock: connect: permission denied

解决办法：sudo chmod 666 /var/run/docker.sock

 

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