testing if script gets executed somehow before the rest

.gitlab-ci.yml

@@ -48,7 +48,8 @@ ctafrontend_docker:
   stage: build:dockerimage
   tags:
     - docker-image-build
-  script: "" # unused but this line is required by GitLab CI
+  script:
+    - echo "Hello world"
   variables:
     TO: gitlab-registry.cern.ch/cta/cta-orchestration
     CONTEXT_DIR: continuousintegration/docker/ctafrontend/cc7