IONOS(build): add manual trigger for comparison testing in build-artifact.yml

Signed-off-by: Misha M.-Kupriyanov <kupriyanov@strato.de>

Author: printminion-co

.github/workflows/build-artifact.yml

@@ -31,6 +31,13 @@ on:
     branches:
       - ionos-dev
       - ionos-stable
+  workflow_dispatch:  # Manual trigger only for comparison testing
+    inputs:
+      force_rebuild:
+        description: 'Force rebuild all apps (ignore cache)'
+        required: false
+        type: boolean
+        default: false
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.ref == 'refs/heads/ionos-dev' && github.run_id || github.event.pull_request.number || github.ref }}