different rules in publish job and build job

.gitlab-ci.yml

@@ -35,7 +35,7 @@ job_build_artifact:
 job_publish_artifact:
   stage: publish
   rules: # Conditions under which this job should run
-    - if:  $CI_PIPELINE_SOURCE == "merge_request_event" && $CI_MERGE_REQUEST_TARGET_BRANCH_NAME == "main"  # Run this job only for merge request event into main.
+    - if:  $CI_PIPELINE_SOURCE == "push" && $CI_MERGE_COMMIT_REF_NAME =~ /main/  # Run this job only for merge request event into main.
       when: always
   image: curlimages/curl:latest # Custom image with curl
   tags: