FROM python:3.11-slim

# System packages needed for OCR & PDF rendering
RUN apt-get update && \
    apt-get install -y --no-install-recommends \
        tesseract-ocr \
        poppler-utils \
        libgl1 \
    && rm -rf /var/lib/apt/lists/*

WORKDIR /app
COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt
COPY . .

# Hugging Face Spaces expects apps on port 7860
ENV PORT=7860
EXPOSE 7860
CMD ["streamlit", "run", "app.py", "--server.port=7860", "--server.address=0.0.0.0"]