FROM python:3.10-slim

# System deps: needed by chromadb, sentence-transformers, and pymupdf (optional)
RUN apt-get update && apt-get install -y --no-install-recommends \
    build-essential \
    git \
    curl \
    && rm -rf /var/lib/apt/lists/*

RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH"

WORKDIR /app

COPY --chown=user requirements.txt /app/requirements.txt
RUN pip install --no-cache-dir --upgrade pip && \
    pip install --no-cache-dir -r /app/requirements.txt

COPY --chown=user . /app

# Hugging Face Spaces requires listening on 7860
EXPOSE 7860

CMD ["gunicorn", "-w", "1", "-b", "0.0.0.0:7860", "app:app"]