I was about to ask why this is better than the docker installation, but I see step one is to install docker haha.
I've been running the docker container for a long time, it works very well. It is a bit more complicated if you try and use extensions that require seperatw containers (like setting up collabora), but that can be done as well. It's just more complicated.
I do remember needing to know how to access the internal terminal a few times, but I don't remember why. If I think of it I'll come back and add instructions.
As a former self-configured docker compose NC user, I have to say I'm way happier with the AIO. But still, the older docker method was head and shoulders over any other method of running NC that I'd used.