as bs cs
export FLASK_APP=app.py
flask run
https://docs.docker.com/compose/gettingstarted/
https://runnable.com/docker/python/dockerize-your-flask-application
https://realpython.com/dockerizing-flask-with-compose-and-machine-from-localhost-to-the-cloud/
docker-compose up
docker-compose down --volumes
docker volume ls
git rebase -i HEAD~4
git push origin dev --force