Isolated environments for test/evals

[ErikBjare]

I just had an eval of Claude 3 Haiku create git repositories in ~ and ~/Programming. Not great.

Should figure out a way to constrain its impacts, either via Docker container or chroot or CI or something.

[ErikBjare]

I added a basic Dockerfile for running evals in 75deabc

[ErikBjare]

Fixed now that Dockerfile.eval exists.

Ideally, it should prob be changed so that each eval runs in its own container (spawned by gpt-eval). But that's for another time.