build update

.build/prod/frontend.Dockerfile

@@ -1,10 +1,28 @@
+# Build stage - compile the React/Vite app
+FROM node:20-alpine AS builder
+
+WORKDIR /app
+
+# Copy package files first for better caching
+COPY frontend-react/package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy source files
+COPY frontend-react/ ./
+
+# Build the production bundle
+RUN npm run build
+
+# Production stage - serve with Nginx
 FROM nginx:alpine
 
 # Copy custom nginx configuration
 COPY .build/prod/nginx.conf /etc/nginx/nginx.conf
 
-# Copy static frontend files
-COPY Frontend/ /usr/share/nginx/html/
+# Copy built React app from builder stage
+COPY --from=builder /app/dist /usr/share/nginx/html/
 
 # Expose port 80
 EXPOSE 80