What is the result of mounting `/var/run/docker.sock` in a Docker in Docker scenario?
问题 I've read Can anyone explain docker.sock to understand what /var/run/docker.sock does, but its use in GitLab CI's Use Docker socket binding has me confused. Here is their example command for the gitlab-runner registration: sudo gitlab-runner register -n \ --url https://gitlab.com/ \ --registration-token REGISTRATION_TOKEN \ --executor docker \ --description "My Docker Runner" \ --docker-image "docker:19.03.12" \ --docker-volumes /var/run/docker.sock:/var/run/docker.sock I see two places that