this folder copies relevant files from /etc/nginx

some relevant conversation: https://openwebui.waterruupto.duckdns.org/c/02f03ae8-bb16-4e80-bc7d-455db3fb68af

## to add a new subdomain
1. create a new node in sites-available/duckdns
2. run `sudo certbot --nginx -d newsubdomain.waterruupto.duckdns.org`