Update .gitlab-ci.yml

.gitlab-ci.yml

+image: alpine:latest
+
 stages:
   - test
   - deploy
@@ -22,5 +24,9 @@ pages:
   stage: deploy
   script:
   - echo "Deploying to https://transfer.hft-stuttgart.de/pages/$CI_PROJECT_PATH/"
+  artifacts:
+    paths:
+    - public
   only:
   - master
+