using correct signs?

.gitlab-ci.yml

@@ -11,7 +11,7 @@ build_and_push:
   stage: build_and_push
   image: docker:latest
   script:
-    - IMAGES=('basis' 'tp' 'tp_geant' 'tp_herwig');
+    - IMAGES=( "basis" "tp" "tp_geant" "tp_herwig" );
     - docker login -u jeppelt -p $DOCKER_TOKEN;
     - |
       for image in "${IMAGES[@]}"; do