Slim down michaelf34/infinity:latest-amd

### Feature request

The infinity Dockerfile is carefully constructed to not drag its build artifacts into the final image, but unfortunately the base image `rocm/pytorch:rocm6.2.3_ubuntu22.04_py3.10_pytorch_release_2.3.0` is not, and it is huge. The infinity image ends up being >20G compressed, and almost 80G on disk.

### Motivation

Save disk space. Save the planet.

### Your contribution

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Start by inspecting the infinity Dockerfile and the rocm/pytorch:rocm6.2.3_ubuntu22.04_py3.10_pytorch_release_2.3.0 base image configuration. Build and measure the current image to identify the source of its size. Done means the infinity image is materially smaller than the reported >20G compressed and ~80G on disk.

Written by the indexing model from the issue text.