change workflow requirement

.github/workflows/docker-build-pr.yml

@@ -10,7 +10,7 @@ env:
 jobs:
   build-and-push-image:
     runs-on: ubuntu-latest
-    if: github.event.review.state == 'approved'
+    if: github.event.workflow_run.conclusion == 'success'
     permissions:
       contents: read
       packages: write