Collabora Online 1.8 with LO 5.1 and new features

I’m also trying to install this docker image on my system that looks like this:

Nginx Reverse Proxy: 192.168.4.201 (Handles all the SSL and HTTP requests and send them to the correct backend)
Apache2 backend with both Nextcloud and Docker image: 192.168.4.111

Now, how do I configure this? My Nginx Reverse Proxy sends everything over HTTP as it’s internal traffic on the server, but the configuration for Collabora demands SSL. My Nginx Reverse Proxy handles the SSL requests (I have Let’s Encrypt on Nginx and not my backends i.e.) and I can’t add a virtual host in Apache (backend) as it only gets HTTP traffic from the proxy.

I tried a few scenarios, but I’m stuck. Would really want this to work. Thanks!

Any update on this matter?