Add files via upload

frontend/Dockerfile

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+# Stage 1: Build React app
+FROM node:18 as build
+
+WORKDIR /app
+
+COPY package.json package-lock.json ./
+
+RUN npm install
+
+COPY . .
+
+RUN npm run build
+
+# Stage 2: Serve with nginx
+FROM nginx:alpine
+
+COPY --from=build /app/build /usr/share/nginx/html
+
+# Expose port 80
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]