backend/Dockerfile

FROM python:3.11-slim

RUN apt-get update && \
    apt-get install -y --no-install-recommends build-essential curl && \
    rm -rf /var/lib/apt/lists/*

WORKDIR /app

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

COPY backend /app/backend
COPY data /app/data
COPY scripts /app/scripts
COPY .env.example /app/.env.example

RUN python3 /app/scripts/preprocess_data.py

ENV PORT=7860
ENV PYTHONPATH="/app/backend/src:${PYTHONPATH}"
ENV PYTHONUNBUFFERED=1

EXPOSE 7860

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

CMD ["uvicorn", "backend.main:app", "--host", "0.0.0.0", "--port", "7860"]