It does require a beefy server (rendering tiles is CPU/RAM-intensive, storing pre-rendered tiles is expensive on storage) It should be doable on limited hardware if only a small area.
I think the better move would be keeping/distributing a local copy of the OsmAnd android APK and a few maps for the app. Because you’ll not be able to provide map access to people from your server if the Internet/local fiber/phone network is down - this way everyone can have their own full copy of the map.
I’m not sure about the method to extract map data from the app storage directory though.