FROM python:3.12-slim

# ePyT loads the EPANET toolkit shared library; these keep it happy on slim.
RUN apt-get update && apt-get install -y --no-install-recommends \
    libgomp1 \
    && rm -rf /var/lib/apt/lists/*

# HF Spaces run as uid 1000 / user "user".
RUN useradd -m -u 1000 user
USER user
ENV PATH="/home/user/.local/bin:$PATH" \
    HOME=/home/user \
    PORT=7860

WORKDIR /home/user/app

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

COPY --chown=user app.py smoke_test.py ./
COPY --chown=user networks ./networks

EXPOSE 7860
CMD ["python", "app.py"]