Update .gitlab-ci.yml file

.gitlab-ci.yml

@@ -46,7 +46,7 @@ Pull:
   script:
     - |
       echo "login into docker login registry.git-ce.rwth-aachen.de"
-      echo $CI_BUILD_TOKEN | docker login registry.git-ce.rwth-aachen.de -u $CI_REGISTRY_USER
+      docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD registry.git-ce.rwth-aachen.de
       echo "downloading scripts"
       docker pull registry.git-ce.rwth-aachen.de/etit/docker-test-images/ms-sql-docker-base:latest
   # Only build off of master branch: