do not push image for pull request

Author: anthony-nhs

.github/workflows/pull_request.yml

@@ -92,4 +92,4 @@ jobs:
     with: 
       docker_tag: 'pr-${{ needs.get_issue_number.outputs.issue_number }}-${{ needs.get_commit_id.outputs.sha_short }}'
       tag_latest: false
-      push_image: true
+      push_image: false