FROM python:3.11-slim

RUN useradd -m -u 1000 user

USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    STREAMLIT_SERVER_PORT=7860 \
    STREAMLIT_SERVER_ADDRESS=0.0.0.0 \
    STREAMLIT_SERVER_HEADLESS=true \
    STREAMLIT_BROWSER_GATHER_USAGE_STATS=false

WORKDIR $HOME/app

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

COPY --chown=user . .

# Pre-compute the crime and population caches so the app starts instantly.
# If the build-time download fails, the app will build the cache at runtime.
RUN python -c "import app; app.warm_cache()" \
    || echo "warm cache skipped; will build at first run"

EXPOSE 7860

CMD ["streamlit", "run", "app.py", \
     "--server.port=7860", \
     "--server.address=0.0.0.0", \
     "--server.enableXsrfProtection=false"]