example frontend-backend communication

SerpentRace_Backend/src/Api/index.ts

@@ -45,7 +45,7 @@ app.use(loggingService.requestLoggingMiddleware());
 
 app.use((req, res, next) => {
     const origin = req.headers.origin;
-    const allowedOrigins = ['http://localhost:3000', 'http://localhost:3001', 'http://localhost:8080'];
+    const allowedOrigins = ['http://localhost:3000', 'http://localhost:3001', 'http://localhost:8080', process.env.FRONTEND_URL];
     
     if (!origin || allowedOrigins.includes(origin)) {
         res.setHeader('Access-Control-Allow-Origin', origin || '*');