Update Dockerfile

Dockerfile

@@ -1,8 +1,20 @@
-FROM python:3.10-slim
+# Stage 1: Build the React frontend
+FROM node:18 AS frontend-build
+WORKDIR /app/frontend
+COPY frontend/package.json frontend/package-lock.json ./
+RUN npm ci
+COPY frontend ./
+RUN npm run build
+
+# Stage 2: Build the Python backend
+FROM python:3.10-slim AS backend
 WORKDIR /app
 COPY requirements.txt .
-RUN pip install -r requirements.txt
+RUN pip install --no-cache-dir -r requirements.txt
 COPY . .
-# Build and serve React
-RUN cd frontend && npm ci && npm run build
+
+# Copy the built React frontend from the previous stage
+COPY --from=frontend-build /app/frontend/build ./frontend/build
+
+# Expose the port and run the FastAPI app
 CMD ["uvicorn", "app:app", "--host", "0.0.0.0", "--port", "7860"]