feat: Add Docker configuration for the application stack and implement client-side API for data management and Excel export.

client/Dockerfile

@@ -0,0 +1,19 @@
+# Stage 1: Build the React application
+FROM node:18-alpine as build
+
+WORKDIR /app
+
+COPY package*.json ./
+RUN npm install
+
+COPY . .
+RUN npm run build
+
+# Stage 2: Serve the application with Nginx
+FROM nginx:alpine
+
+COPY --from=build /app/build /usr/share/nginx/html
+
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]