FROM python:3.12-slim

# curl for the HEALTHCHECK
RUN apt-get update && apt-get install -y --no-install-recommends curl && \
    apt-get clean && rm -rf /var/lib/apt/lists/*

# HuggingFace Spaces runs containers as user 1000
RUN useradd -m -u 1000 user
USER user

ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONPATH=/home/user/app \
    PYTHONUNBUFFERED=1 \
    PYTHONDONTWRITEBYTECODE=1

WORKDIR $HOME/app

RUN pip install --no-cache-dir --upgrade pip

# Install dependencies first for layer caching
COPY --chown=user pyproject.toml README.md $HOME/app/
RUN pip install --no-cache-dir fastapi httpx lxml numpy pandas pydantic pyyaml requests uvicorn yfinance

COPY --chown=user src/ $HOME/app/src/
COPY --chown=user configs/ $HOME/app/configs/
COPY --chown=user app.py $HOME/app/

EXPOSE 7860

HEALTHCHECK --interval=30s --timeout=10s --start-period=120s --retries=3 \
    CMD curl --fail http://localhost:7860/health || exit 1

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