fix: Copy full source code in speaker-recognition Dockerfile (#243)

Adds COPY src/ src/ step after dependency installation to ensure
all source files are available in the Docker image. This improves
build caching while ensuring complete source code is present.

Author: AnkushMalaker

extras/speaker-recognition/Dockerfile

@@ -31,6 +31,9 @@ COPY src/simple_speaker_recognition/__init__.py src/simple_speaker_recognition/
 RUN uv sync --no-dev --extra ${PYTORCH_CUDA_VERSION} && \
     uv cache clean
 
+# Copy the full source code (after dependencies are cached)
+COPY src/ src/
+
 # Create directories
 RUN mkdir -p /app/audio_chunks /app/debug /app/data /models