Install and configure nginx.
Install the nginx package from the official PPA.
Set default ssl settings in the http context. This settings can be overwritten for server {} block if needed.
To deploy sites, you need to put your configuration files in /etc/nginx/conf.d in another formula.
Automatically install, configure and update TLS certificates using letsencrypt.
It uses lightweight dehydrated implementation in conjunction with a systemd.timer.
See pillar.example for documentation details.
Tests currently fail, as it doesn't seem to be possible anymore to start nginx within Github Actions. Ideas welcome.