docker build -t python-gitlab:VERSION .
docker run -it --rm -e GITLAB_PRIVATE_TOKEN=<your token> =/python-gitlab.cfg python-gitlab <command> ...
To change the endpoint, add -e GITLAB_URL=<your url>
Bring your own config file: docker run -it --rm -v /path/to/python-gitlab.cfg:/python-gitlab.cfg -e GITLAB_CFG=/python-gitlab.cfg python-gitlab <command> ...