add react frontend to docker

frontend-react/Dockerfile

@@ -0,0 +1,30 @@
+# 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 nginx/nginx.conf /etc/nginx/nginx.conf
+
+# Copy built React app from builder stage
+COPY --from=builder /app/dist /usr/share/nginx/html/
+
+# Expose port 80
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]