really add something

playwright.config.ts

@@ -1,6 +1,9 @@
 import { defineConfig, devices } from "@playwright/test";
 import dotenv from "dotenv";
 
+const PORT = process.env.PORT || 3000;
+const BASE_URL = process.env.BASE_URL || `http://localhost:${PORT}`;
+
 /**
  * Read environment variables from file.
  * https://github.com/motdotla/dotenv
@@ -25,7 +28,7 @@ export default defineConfig({
   /* Shared settings for all the projects below. See https://playwright.dev/docs/api/class-testoptions. */
   use: {
     /* Base URL to use in actions like `await page.goto('/')`. */
-    baseURL: "http://localhost:3000",
+    baseURL: BASE_URL,
 
     /* Collect trace when retrying the failed test. See https://playwright.dev/docs/trace-viewer */
     trace: "on-first-retry",