In that case, this is the one you want: https://github.com/ublue-os/startingpoint
The instructions are here: https://universal-blue.org/tinker/make-your-own/
You need a GitHub account first. Use the web installer they link to under the setup section. Don’t forget to enable the actions in your repository because they aren’t enabled by default. Everything else is in the instructions. No coding required.
Nobody is buying this and I don't think they are trying very hard to sell it either. Notice that this pricing is only in the U.S. This seems like a ploy to bolster their case for damages and/or royalties in a settlement. Or maybe just part of their patent defense strategy. This company is primarily in medical tech. Even if they aren't so interested in the consumer market, they have to protect their patent or someone in a market they do care about will get away with it too. I would assume it strengthens their case if they can demonstrate material damages in a market they participate in. So quickly unveil a prototype, price it so there's little to no demand, don't bother manufacturing a product nobody wants, win the case, cancel the product.