Utilize uv for dependencies, and re-use containers where possible

[M1kep]

No description provided.

[M1kep]

See astral-sh/uv#1595 for rational and some background. TLDR: It shouldn't make a difference.

There's some more chatter here too(Is also linked in the uv issue above) - jazzband/pip-tools#1613

[huntcsg]

Is this just a performance improvement? UV has better dependency resolution?
This change seems fine. I just want to understand the benefit better.

[M1kep]

Yeah, mostly performance. I think their dependency resolution has some more features, but I don't think they'll be of use in this project.
10x-100x according to the uv team - https://github.com/astral-sh/uv/blob/main/BENCHMARKS.md

uv performance improvements are more obvious in installation flows I believe, so would be curious to see the image build speedup by switching as well, but will keep that for later

[IsaacGemal]

I like UV a lot