关于/var/run/docker.sock
https://blog.fundebug.com/2017/04/17/about-docker-sock/
https://blog.csdn.net/Nightwish5/article/details/105041428
ERROR: Cannot connect to the Docker daemon at unix:///var/run/docker.sock.
https://stackoverflow.com/questions/56462126/how-to-add-v-var-run-docker-sock-var-run-docker-sock-when-running-container
https://forums.docker.com/t/cannot-connect-to-the-docker-daemon-is-the-docker-daemon-running-on-this-host/8925