DOCKER权限问题：权限不够Got permission denied while trying to connect to the Docker daemon socket at unix:

问题：在用户权限下docker 命令需要 sudo 否则出现以下问题，

Got permission denied while trying to connect to the Docker daemon
socket at unix:///var/run/docker.sock: Post
http://%2Fvar%2Frun%2Fdocker.sock/v1.39/images/create?fromImage=arm64v8%2Fubuntu&tag=18.04:
dial unix /var/run/docker.sock: conne ct: permission denied

使用docker命令时遇到了权限问题的解决办法：

1. 添加docker用户组

sudo groupadd docker

2. 将登陆用户加入到docker用户组中

sudo gpasswd -a $USER docker

3. 更新用户组

newgrp docker