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

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,
             },