Fixed syntax error

shared-ci.yml

@@ -72,7 +72,7 @@ image: registry.git.cccv.de/infra/packages/docker-images/utility
 .publish:
   stage: publish
   rules:
-  - if: '$RUN_AUTOUPDATE != "1" && $CI_COMMIT_TAG =~ /./'
+  - if: '$RUN_AUTOUPDATE != "1" && $CI_COMMIT_TAG != ""'
 
 .publish:apt:
   extends: .publish