test: speed up server for playwright tests on CI (#3274)

.github/workflows/playwright.yml

@@ -4,6 +4,8 @@ on:
     branches: [main, beta]
   pull_request:
     branches: [main, beta]
+env:
+  NEXT_PUBLIC_BASE_URL: http://localhost:3000
 jobs:
   test:
     name: E2E Tests
@@ -16,6 +18,8 @@ jobs:
           node-version: lts/*
       - name: Install dependencies
         run: npm ci
+      - name: Build App
+        run: npm run build
       - name: Install Playwright Browsers
         run: npx playwright install --with-deps
       - name: Run Playwright tests

playwright.config.ts

@@ -70,7 +70,7 @@ export default defineConfig({
 
   /* Run your local dev server before starting the tests */
   webServer: {
-    command: "npm run dev",
+    command: process.env.CI ? "npm start" : "npm run dev",
     url: "http://127.0.0.1:3000",
     reuseExistingServer: !process.env.CI,
   },