fix: $CI_MERGE_REQUEST_SOURCE_BRANCH_NAME

.gitlab-ci.yml

@@ -226,7 +226,7 @@ docker-push:
   rules:
     - *release-rules
     # every commit on master/main or feature branch should trigger a push
-    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH || $CI_COMMIT_REF_PROTECTED =~ "true"
+    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH || $CI_MERGE_REQUEST_SOURCE_BRANCH_NAME =~ /^feat/
       exists:
         - Dockerfile