Update .gitlab-ci.yml, new deployment pipeline

.gitlab-ci.yml

-variables:
-  EXPORT_DIR: "/var/www/html/pages"
+image: alpine:latest
 
-pages-master:
+pages:
   stage: deploy
   script:
-    - mkdir -p "$EXPORT_DIR/$CI_PROJECT_NAME"	
-    - cp -r public/* "$EXPORT_DIR/$CI_PROJECT_NAME"
-  tags: 
-    - production
-  only: 
-    - master
+  - echo "Deploying to https://transfer.hft-stuttgart.de/pages/$CI_PROJECT_PATH/"
+  artifacts:
+    paths:
+    - public
+  only:
+  - master