Ubuntu安装docker后使用当前用户执行docker指令报以下错误：
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解决方案：
- 创建docker group
sudo groupadd docker
- 将当前用户添加到docker group中
sudo usermod -aG docker ${USER}
-
切换一次用户（su到别的用户再su回来）使配置生效
-
确认下是否生效
