Hi,
As with most 'odd' solutions it's best to ask why you want to do this in the first place? What are you trying to achieve?
You say you want to host a 'web page' on the Miniserver which IMHO is a crazy idea. It's a home automation device and not designed to host web pages (sure, it has a rudimentary web server for it's own UI & REST services but hardly up to much else). Maybe you are trying to do something Loxone specific with your 'web page' and think there's no harm in putting that page on the Miniserver? Either way, I imagine you would be far better off putting this 'web page' on another machine in your LAN. If you don't have another machine, get a cheap mini PC or Raspberry Pi (or clone).
If it's a matter of you thinking you need to serve a page from the Miniserver because it's where you have a DMZ or the only port forward into your LAN from the outside internet then IMHO that's also a bad idea, sort out your external access. Personally we use Wireguard to allow access to our LAN which is much more secure than leaving a port forwarded to your Miniserver. This would leave you able to send requests to your public IP on port 80 (yerch!) or 443 (better) to wherever in you like inside your LAN.
Robin