Dockerfile

# Fetch — Docker Space image.
# Python 3.11 is deliberate: stable, wide wheel coverage, avoids the
# audioop removal in 3.13.
FROM python:3.11-slim

# Prevent .pyc files + force stdout/stderr to flush immediately so HF's
# log viewer shows startup progress in real time.
ENV PYTHONDONTWRITEBYTECODE=1 \
    PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1 \
    # Cache HuggingFace model downloads in a writable path under the
    # non-root user's home. HF Spaces mounts this writable.
    HF_HOME=/home/user/.cache/huggingface \
    TRANSFORMERS_CACHE=/home/user/.cache/huggingface

# Minimal system deps. No ffmpeg, no libgl — we don't need audio or vision.
RUN apt-get update \
    && apt-get install -y --no-install-recommends ca-certificates \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces requires running as a non-root user (UID 1000).
RUN useradd -m -u 1000 user
USER user
ENV PATH=/home/user/.local/bin:$PATH
WORKDIR /home/user/app

# Install Python deps first for better layer caching.
COPY --chown=user requirements.txt ./
RUN pip install --user --no-cache-dir -r requirements.txt

# App code.
COPY --chown=user app.py ./
COPY --chown=user static/ ./static/

# HF Spaces expects the app on port 7860.
EXPOSE 7860

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