Update Dockerfile and add docker-compose for standalone and traefik

src/app.ts

@@ -17,7 +17,7 @@ app.use(express.json());
 app.use(cookieParser());
 app.use(
   cors({
-    origin: process.env.CLIENT_URL || 'http://localhost:3000',
+    origin: process.env.APP_URL || 'http://localhost:3000',
     credentials: true,
   })
 );