Dockerfile

# Stage 1: Build frontend
FROM node:20-alpine AS frontend-builder

WORKDIR /app/frontend

COPY frontend/package.json frontend/package-lock.json ./
RUN npm ci

COPY frontend/ ./
RUN npm run build

# Stage 2: Final image
FROM python:3.10-slim

# Install nginx, supervisor and node runtime for Next.js standalone server
RUN apt-get update && apt-get install -y nginx supervisor nodejs && rm -rf /var/lib/apt/lists/*

WORKDIR /app

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

COPY backend/ ./backend/

# Frontend from builder
COPY --from=frontend-builder /app/frontend/.next/standalone ./frontend/
COPY --from=frontend-builder /app/frontend/.next/static ./frontend/.next/static

# Nginx config
COPY nginx.conf /etc/nginx/nginx.conf

# Supervisor config
RUN cat > /etc/supervisor/conf.d/app.conf << 'EOF'
[supervisord]
nodaemon=true

[program:backend]
command=uvicorn backend.main:app --host 127.0.0.1 --port 8000
directory=/app
autostart=true
autorestart=true

[program:frontend]
command=node frontend/server.js
directory=/app
environment=PORT=3000,HOSTNAME=0.0.0.0
autostart=true
autorestart=true

[program:nginx]
command=nginx -g "daemon off;"
autostart=true
autorestart=true
EOF

EXPOSE 7860

CMD ["supervisord", "-c", "/etc/supervisor/supervisord.conf"]