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

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：

sudo groupadd docker

sudo gpasswd -a $USER docker

newgrp docker