disable pipelines for forked projects

.gitlab-ci.yml

@@ -10,6 +10,8 @@ variables:
 
 workflow:
   rules:
+    - if: $CI_PROJECT_NAMESPACE != "open-source"
+      when: never
     - if: $CI_COMMIT_BRANCH != "master" && $CI_COMMIT_BRANCH != "development" &&  ($CI_COMMIT_TAG || $CI_COMMIT_BRANCH)
       variables:
         APP_URL: "https://${DOCKER_IMAGE_TAG_PREFIX}.review.metager.de"