# Multi-stage build aligned with NeonClary/LLMComparisons (Node build + FastAPI + static)
# Hugging Face Spaces exposes port 7860 for Docker Spaces.

FROM node:20-alpine AS frontend-build
WORKDIR /app/frontend
COPY frontend/package.json frontend/package-lock.json ./
RUN npm ci
COPY frontend/ ./
RUN npm run build

FROM python:3.12-slim

RUN useradd -m -u 1000 user
USER user
ENV HOME=/home/user \
    PATH=/home/user/.local/bin:$PATH \
    PYTHONUNBUFFERED=1 \
    CORS_ORIGINS=*

WORKDIR $HOME/app

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

COPY --chown=user backend/ ./
COPY --chown=user --from=frontend-build /app/frontend/dist ./static

EXPOSE 7860

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