- make sure every host can be looked up (IP, URL, domain, email address, typos)
- figure out how the sec.joostagterhoek.nl is working now (does it use Gunicorn?)
- Try this YunoHost-forum post: https://forum.yunohost.org/t/nginx-gunicorn-flask/30166/5
- Should that not work, follow: https://www.digitalocean.com/community/tutorials/how-to-serve-flask-applications-with-gunicorn-and-nginx-on-ubuntu-18-04
- work out a CI/CD kind of pipeline for new ‘releases’