[UX]: Replace conda with uv in dstack's default Docker image #2625

[peterschmidt85]

• Updated CUDA to 12.1.1
• Use NVIDIA's devel image

[jvstme]

Since the two Dockerfiles now only differ in the FROM clause, I'd suggest to keep just one Dockerfile and parametrize it. Something like that should work:

ARG FLAVOR
FROM nvidia/cuda:12.1.1-$FLAVOR-ubuntu20.04

This will allow to avoid duplication and related errors, such as forgetting to add stuff to one of the images.

[jvstme]

Also drop the deleted Dockerfile from the workflow, otherwise the workflow won't work

Suggested change

	docker buildx build --platform linux/amd64 --build-arg FLAVOR=devel --build-arg PYTHON=${{ matrix.python }} --build-arg VERSION=${{ inputs.image_version }} --push --provenance=false --tag dstackai/base:py${{ matrix.python }}-${{ inputs.image_version }}-cuda-12.1-devel -f base/devel.Dockerfile .
	docker buildx build --platform linux/amd64 --build-arg FLAVOR=devel --build-arg PYTHON=${{ matrix.python }} --build-arg VERSION=${{ inputs.image_version }} --push --provenance=false --tag dstackai/base:py${{ matrix.python }}-${{ inputs.image_version }}-cuda-12.1-devel -f base/Dockerfile .

[peterschmidt85]

Done via #2659

[jvstme]

Since the devel image no longer depends on the base image, it also makes sense to move FLAVOR to the job matrix (line 47), so that base and devel images can be built in parallel

[peterschmidt85]

Done via #2659