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Dockerfile

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+# ── Stage 1: Build React frontend ───────────────────────────────────────────
+FROM node:18-slim AS frontend-build
+
+WORKDIR /app/frontend
+
+COPY frontend/package*.json ./
+RUN npm ci
+
+COPY frontend/ ./
+
+# Point API calls to /api/ which Nginx will proxy to the backend
+ENV VITE_API_BASE_URL=/api
+
+RUN npm run build
+
+# ── Stage 2: Python backend + Nginx ─────────────────────────────────────────
+FROM python:3.10-slim
+
+# Install Nginx and system dependencies
+RUN apt-get update && apt-get install -y --no-install-recommends \
+    nginx \
+    && rm -rf /var/lib/apt/lists/*
+
+WORKDIR /code
+
+# Install Python dependencies
+COPY backend/requirements.txt /code/requirements.txt
+RUN pip install --no-cache-dir --upgrade -r /code/requirements.txt
+
+# Copy backend source
+COPY backend/ /code/backend/
+
+# Copy built frontend from Stage 1
+COPY --from=frontend-build /app/frontend/dist /code/frontend/dist
+
+# Configure Nginx: proxy /api/ to FastAPI, serve frontend for everything else
+RUN echo 'server { \
+    listen 7860; \
+    location /api/ { proxy_pass http://127.0.0.1:8000/; } \
+    location / { root /code/frontend/dist; try_files $uri $uri/ /index.html; } \
+}' > /etc/nginx/sites-enabled/default
+
+# Startup script: run Nginx + FastAPI together
+RUN printf '#!/bin/bash\nnginx &\ncd /code/backend && uvicorn main:app --host 127.0.0.1 --port 8000\n' \
+    > /code/start.sh && chmod +x /code/start.sh
+
+EXPOSE 7860
+
+CMD ["/code/start.sh"]