Update .gitlab-ci.yml file

.gitlab-ci.yml

 image: alpine:latest
 
+stages:
+  - deploy
+
 pages:
   stage: deploy
   script:
-  - echo 'Nothing to do...'
+  - echo "deploy to https://transfer.hft-stuttgart.de/pages/$CI_PROJECT_PATH/"
   artifacts:
     paths:
     - public