diff --git a/.github/workflows/build-pro-image.yml b/.github/workflows/build-pro-image.yml
index a29539799..ec56f91bb 100644
--- a/.github/workflows/build-pro-image.yml
+++ b/.github/workflows/build-pro-image.yml
@@ -5,9 +5,12 @@ concurrency:
   cancel-in-progress: true
 
 on:
-  pull_request:
-    branches:
-      - '**'
+  workflow_dispatch:
+    inputs:
+      pr_number:
+        description: 'Please enter a pull request number'
+        required: true
+
 jobs:
   build-and-push:
     if: github.event.pull_request.head.repo.fork != true