softkot/docker-cleanup repository overview

  -dry-run
        Do not delete pods, just print what will be deleted
  -name string
        name filter, just like docker ps --filter=name=... 
  -since duration
        duration for cleanup, for example 5m

# /etc/gitlab-runner/config.toml
# ...
[[runners]]
# ...
pre_build_script = "docker run -v /var/run/docker.sock:/var/run/docker.sock  --rm softkot/docker-cleanup --name=whatever --since 5m"