Unregister gitlab runner

gitlab-runner-commands.sh

## Remove a runner

sudo gitlab-runner list # To get a list of existing runners
sudo gitlab-runner verify --delete --url $YOUR_GITLAB_DOMAIN --token $YOUR_GITLAB_RUNNER_TOKEN


## Register a docker runner
  
  sudo gitlab-runner register \
  --non-interactive \
  --url "https://$YOUR_GITLAB_DOMAIN" \
  --registration-token "$YOUR_GITLAB_REGISTRATION_TOKEN" \
  --executor "docker" \
  --docker-image docker:stable \
  --description "docker-runner-1" \
  --tag-list "docker, ci" \
  --run-untagged \
  --locked="false" \
  --docker-privileged \
  --docker-volumes "/var/run/docker.sock:/var/run/docker.sock" \
  --docker-volumes "/cache" \
  --docker-extra-hosts "$YOUR_GITLAB_DOMAIN:$YOUR_GITLAB_IP" \