python:3.11-slim base relies on pip torch wheels bundling CUDA runtime libs,
with the host NVIDIA driver passed through via the nvidia container runtime
(compose GPU reservation); TORCH_HOME and XDG_CACHE_HOME point into the
mounted /data volume so Demucs/wav2vec2 weights survive container
recreation.
Docker was not installed in the implementation sandbox, so the image was
not built or run and remains untested. PyYAML was also unavailable, so
docker-compose.yml was not parse-checked programmatically — only hand
reviewed.
branderson