Updated the files.

my-app/node_modules/@schematics/angular/ssr/files/server-builder/server.ts.template

@@ -0,0 +1,69 @@
+import 'zone.js/node';
+
+import { APP_BASE_HREF } from '@angular/common';
+import { CommonEngine } from '@angular/ssr';
+import * as express from 'express';
+import { existsSync } from 'node:fs';
+import { join } from 'node:path';
+import <% if (isStandalone) { %>bootstrap<% } else { %>AppServerModule<% } %> from './src/main.server';
+
+// The Express app is exported so that it can be used by serverless Functions.
+export function app(): express.Express {
+  const server = express();
+  const distFolder = join(process.cwd(), '<%= browserDistDirectory %>');
+  const indexHtml = existsSync(join(distFolder, 'index.original.html'))
+    ? join(distFolder, 'index.original.html')
+    : join(distFolder, 'index.html');
+
+  const commonEngine = new CommonEngine();
+
+  server.set('view engine', 'html');
+  server.set('views', distFolder);
+
+  // Example Express Rest API endpoints
+  // server.get('/api/**', (req, res) => { });
+  // Serve static files from /browser
+  server.get('*.*', express.static(distFolder, {
+    maxAge: '1y'
+  }));
+
+  // All regular routes use the Angular engine
+  server.get('*', (req, res, next) => {
+    const { protocol, originalUrl, baseUrl, headers } = req;
+
+    commonEngine
+      .render({
+        <% if (isStandalone) { %>bootstrap<% } else { %>bootstrap: AppServerModule<% } %>,
+        documentFilePath: indexHtml,
+        url: `${protocol}://${headers.host}${originalUrl}`,
+        publicPath: distFolder,
+        providers: [{ provide: APP_BASE_HREF, useValue: baseUrl }],
+      })
+      .then((html) => res.send(html))
+      .catch((err) => next(err));
+  });
+
+  return server;
+}
+
+function run(): void {
+  const port = process.env['PORT'] || 4000;
+
+  // Start up the Node server
+  const server = app();
+  server.listen(port, () => {
+    console.log(`Node Express server listening on http://localhost:${port}`);
+  });
+}
+
+// Webpack will replace 'require' with '__webpack_require__'
+// '__non_webpack_require__' is a proxy to Node 'require'
+// The below code is to ensure that the server is run only when not requiring the bundle.
+declare const __non_webpack_require__: NodeRequire;
+const mainModule = __non_webpack_require__.main;
+const moduleFilename = mainModule && mainModule.filename || '';
+if (moduleFilename === __filename || moduleFilename.includes('iisnode')) {
+  run();
+}
+
+export default <% if (isStandalone) { %>bootstrap<% } else { %>AppServerModule<% } %>;