FROM python:3.12-slim

WORKDIR /app

# System deps kept minimal; python-pptx + bs4 are pure-python.
ENV PYTHONUNBUFFERED=1 \
    PIP_NO_CACHE_DIR=1

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

COPY . .

# Streamlit config for containers.
ENV STREAMLIT_SERVER_PORT=8501 \
    STREAMLIT_SERVER_ADDRESS=0.0.0.0 \
    STREAMLIT_SERVER_HEADLESS=true \
    STREAMLIT_BROWSER_GATHER_USAGE_STATS=false \
    MOCK_MODE=true

EXPOSE 8501

HEALTHCHECK --interval=30s --timeout=5s --retries=3 \
  CMD python -c "import urllib.request; urllib.request.urlopen('http://localhost:8501/_stcore/health')" || exit 1

CMD ["streamlit", "run", "app.py"]