a script to starting GitLab CI runners, which can run docker inside

create-ci-runner.sh

#!/bin/sh

docker run -d --name "gitlab-runner-$1" --restart always \
  -v /var/run/docker.sock:/var/run/docker.sock \
  -v /srv/gitlab-runner/config:/etc/gitlab-runner \
  gitlab/gitlab-runner:latest

docker exec -it "gitlab-runner-$1" gitlab-runner register -n \
  --url "$3/ci" \
  --registration-token "$2" \
  --executor docker \
  --description "ci-runner-$1" \
  --docker-image "docker:latest" \
  --docker-volumes /var/run/docker.sock:/var/run/docker.sock