Astro SSR with Express Js

Hey guys, I’ve build a site using Astro, love Astro btw it’s amazing, and I’ve ran into an issue. Not sure this is the right place for this though, let me explain… So I need to run my site on Express to connect it to the companies internal server, fine, and I see that Astro has a Node.Js plug-in for SSR, but how the heck do I show the Astro pages using the Astro SSR middleware? I’ve been searching this for days and tried lots of things but I can’t seem to find the answer. Has anyone done this? Or am I misunderstanding SSR… Thanks in advance!