Move ROOT_RELATIVE_NAMESPACE to CI variables in GitLab

.gitlab-ci.yml

@@ -14,8 +14,8 @@ workflow:
   stage: deploy
   tags:
     - docker
-  variables:
-    ROOT_RELATIVE_NAMESPACE: "${CI_PROJECT_NAMESPACE#$CI_PROJECT_ROOT_NAMESPACE}"
+#  variables:
+#    ROOT_RELATIVE_NAMESPACE: "${CI_PROJECT_NAMESPACE#$CI_PROJECT_ROOT_NAMESPACE}"
   script:
     - sed -i "s/%%BRANCH%%/$CI_COMMIT_BRANCH/g" src/index.html
     - mv src public