Install resemble-perth with --no-build-isolation

pip's isolated build environments don't have the uv binary available,
causing uv-build to fail. Installing with --no-build-isolation lets pip
use the already-installed uv from the system environment.

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

Dockerfile.rocm

@@ -17,11 +17,6 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 
 WORKDIR /app
 
-# Install uv and expose its bundled binary so pip isolated build environments
-# can find it when building packages that use uv-build (e.g. resemble-perth).
-RUN pip3 install uv && \
-    ln -sf "$(python3 -c 'import uv; print(uv.find_uv_bin())')" /usr/local/bin/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 .
@@ -31,6 +26,12 @@ RUN pip3 install -r requirements-rocm-init.txt
 COPY requirements-rocm.txt .
 RUN pip3 install -r requirements-rocm.txt
 
+# Step 3: Install resemble-perth with --no-build-isolation so pip uses the
+# already-installed uv binary instead of an isolated env where it can't find it.
+RUN pip3 install uv && \
+    pip3 install --no-build-isolation \
+        "resemble-perth @ git+https://github.com/resemble-ai/Perth.git@master"
+
 # Step 3: Install chatterbox with --no-deps so pip cannot replace ROCm torch.
 RUN pip3 install --no-deps chatterbox-tts