Update server configuration and Docker setup for improved deployment

web/client/Dockerfile

@@ -1,5 +1,5 @@
-# Production build with simple HTTP server
-FROM node:18-alpine
+# Stage 1: Build the React app
+FROM node:18-alpine AS build
 
 WORKDIR /app
 
@@ -11,8 +11,12 @@ COPY . .
 
 RUN npm run build
 
-RUN npm install -g serve
+# Stage 2: Serve with nginx
+FROM nginx:alpine
 
-EXPOSE 3000
+COPY --from=build /app/dist /usr/share/nginx/html
+COPY nginx.conf /etc/nginx/conf.d/default.conf
 
-CMD ["serve", "-s", "dist", "-l", "3000"]
+EXPOSE 80
+
+CMD ["nginx", "-g", "daemon off;"]