Could that not be a script you run on a fresh Ubuntu install? I am just thinking in terms of all the heft and maintenance responsibility for maintaining this website, documentation, etc (which is all going to be virtually identical to every other documentation site), building isos, hosting them, doing releases.

When the end result is just install packages a, b, c, remove snap, add this theme, add this wallapaper. that is like a script to me lol.

aka ship a diff instead of shipping an entire asset.