Dockerfile

# SAAP - Hugging Face Deployment
# Multi-stage build: Frontend → Backend

FROM node:20-slim AS frontend-builder

WORKDIR /app/frontend

# Install frontend dependencies
COPY frontend/package*.json ./
RUN npm ci

# Build frontend
COPY frontend/ ./
RUN npm run build

# ============================================
# Python Backend Stage
# ============================================
FROM python:3.11-slim

WORKDIR /app

# Install minimal system dependencies
RUN apt-get update && apt-get install -y --no-install-recommends \
    gcc \
    libpq-dev \
    && rm -rf /var/lib/apt/lists/*

# Install Python dependencies
COPY backend/requirements.txt ./
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend code to /app (NOT /app/backend)
COPY backend/ ./

# Copy built frontend from builder stage
COPY --from=frontend-builder /app/frontend/dist ./frontend/dist

# Environment variables
ENV PYTHONUNBUFFERED=1
ENV PORT=7860

# Expose Hugging Face Spaces port
EXPOSE 7860

# Start FastAPI (serves API + frontend static files)
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "7860"]