Merge pull request #3792 from erikxiv/fix/listen-to-host

fix(app): listen to app.listen.host

.changeset/violet-sloths-reply.md

@@ -0,0 +1,5 @@
+---
+'@backstage/cli': patch
+---
+
+Fix for `app.listen.host` configuration not properly overriding listening host.

packages/cli/src/lib/bundler/server.ts

@@ -61,7 +61,7 @@ export async function serveBundle(options: ServeOptions) {
   });
 
   await new Promise<void>((resolve, reject) => {
-    server.listen(port, url.hostname, (err?: Error) => {
+    server.listen(port, host, (err?: Error) => {
       if (err) {
         reject(err);
         return;