We have a pretty unusual and specific requirement - we need to setup NextCloud to work on a local network only, without an active internet connection, and for that local network to not always necessarily be the same. The physical server it runs on would be a small computer (probably a mac mini) connected to a wireless router, with a handful of clients (3-5 at a time usually, with a total user base of maybe 10-15 users) connecting over both wired and wireless connections to that router. So it would be a physically portable and mobile setup, which is the key point - this would then be set up in different situations as needed, to provide a temporary local cloud storage and collaboration system that does not depend on an internet connection in order to function. When in use on production days, the system will not be able to have an internet connection at all (we’d be in remote locations without even any mobile signal), although on off-days we’d be able to set it up in the office so it can receive updates etc. If possible it would be nice to allow users to still connect “remotely” when it does have an internet connection, however this is less important than simply having a reliable local system - it’s also likely that every time it gets an internet connection, it will be from a different provider in a different location with a different IP!
Due to the portable and ad hoc nature of this setup, it is also likely that the router or network it is connected to will change at times, so we would need to be able to easily re-configure NC as needed
I’ve had a scan over the documentation and I can see that it is possible to run NC on a local network, however I still see references to domains pointing at the network, certificates, etc which makes it seem like our planned usage won’t be possible - can anyone advise?