I have a bunch of Ubuntu machines on my local network at home. They all periodically need to check for updates then download & install them. Rather than have them all reach out to the official mirrors externally to my network, I decided to run my own mirror internally. This post is just a set of notes for anyone else who might be looking to do something similar.
I also do a lot of software building, and re-building, which pulls all kinds of random libraries, compilers and other packages from the archive. Having it local saves me repeatedly downloading from the ’net while the kids are on Netflix School Zoom classes.