Isn't this mostly the same thing that Chainguard already provides themselves? E.g. the "Free" images on their page [0] have a big overlap with the toolchains from your repo.
I was looking into how to create more secure container image and this looks like a great resource! :)
This looks really good. Good luck for your project!
Also a quick question but when you mention Minimal being well.. Minimal? How much more minimal would it be compared to say alpine?
Also maybe I should stop saying so many times minimal in this comment haha!