Update server port in Vite config and Dockerfile from 5287 to 5237 for consistency

Dockerfile

@@ -25,6 +25,6 @@ RUN chown -R node:node /app
 ENV NODE_ENV=production
 
 USER node
-EXPOSE 5287
+EXPOSE 5237
 
 CMD ["node", "index.js"]

client/vite.config.js

@@ -12,7 +12,7 @@ export default defineConfig({
     server: {
         proxy: {
             "/socket.io": {
-                target: "http://localhost:5287",
+                target: "http://localhost:5237",
                 changeOrigin: true,
                 ws: true,
             },