Gunicorn

Deploy Flask with Gunicorn using Multiprocessing
https://pupli.net/2019/07/01/deploy-flask-with-gunicorn-using-multiprocessing/

Run gunicorn from a folder that is not in the project folder
https://pupli.net/2019/07/16/run-gunicorn-from-a-folder-that-is-not-in-the-project-folder/