Bite the bullet and create a tiny CA for local network.
GitLab CE and Gogs in VPS.
In Tiny VPS Postfix I set up a minimalistic postfix server, which will forward all email to an external email.
In the last part I show a minimal setup of Postfix. It allow incoming emails to be forwarded to specific external email address(es).
How to configure Lighttpd to handle all the domains the way I want?
Finally running my own website, hosting my own blog, having my own server to do whatever I want with it.
The fun of a tiny vps is tweaking everything to use less resource, just do the bare minimum, but at the same time, do what you want it to do.