run job only for tags

.gitlab-ci.yml

@@ -35,7 +35,7 @@ job_build_artifact:
 job_publish_artifact:
   stage: publish
   rules: # Conditions under which this job should run
-    - if:   $CI_COMMIT_REF_NAME =~ /^.*$/ # Run this job for any branch or merge request event.
+    - if: $CI_COMMIT_TAG # only for tags
       when: always
   image: curlimages/curl:latest # Custom image with curl
   tags: