Dockerfile

FROM python:3.11-slim

# ffmpeg for decoding any input + MP3 encoding
RUN apt-get update && apt-get install -y --no-install-recommends \
        ffmpeg git && rm -rf /var/lib/apt/lists/*

# run as the non-root user HF Spaces expects
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH" \
    HF_HOME=/home/user/app/.cache \
    PYTHONUNBUFFERED=1
WORKDIR /home/user/app

# CPU-only torch first, then the rest
COPY --chown=user requirements.txt .
RUN pip install --no-cache-dir --user \
        torch torchaudio --index-url https://download.pytorch.org/whl/cpu \
 && pip install --no-cache-dir --user -r requirements.txt

COPY --chown=user . .

EXPOSE 7860
CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]