Install uv before pip deps to support uv-build backend

resemble-perth uses uv as its build backend; without uv installed
the metadata-generation step fails.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile.rocm

@@ -17,6 +17,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 WORKDIR /app
 
+# Install uv so packages that use uv-build as their build backend can be built.
+RUN pip3 install uv
+
 # Step 1: Install ROCm-compatible PyTorch stack first.
 # This must happen before anything else to prevent pip from pulling CPU wheels.
 COPY requirements-rocm-init.txt .