# Stage 1: Build the React frontend
FROM node:18-alpine AS frontend-builder
WORKDIR /app/frontend
COPY frontend/package*.json ./
RUN npm install
COPY frontend/ .
RUN npm run build

# Stage 2: Final application image
FROM python:3.11-slim

WORKDIR /app

# Copy backend requirements
COPY backend/requirements.txt .

# Install backend dependencies directly into the final image
RUN pip install --no-cache-dir -r requirements.txt

# Copy backend application code
COPY backend/app /app/app

# Copy the built React app from the frontend-builder stage
COPY --from=frontend-builder /app/frontend/build /app/static

# Expose the port the app runs on
EXPOSE 8000

# Run the application as a module (most robust method)
CMD ["python", "-m", "uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000"]