Changed URL.

Signed-off-by: Daniel Scheffler <danschef@gfz-potsdam.de>

tests/CI_docker/build_testsuite_image.sh

@@ -21,7 +21,7 @@ echo ""
 read -p "Please enter gitlab runner name: " runner_name
 echo "New gitlab runner image will named  ${gitlab_runner}"
 docker exec -it ${gitlab_runner} /bin/bash -c "export RUNNER_EXECUTOR=docker && gitlab-ci-multi-runner register -n \
-  --url 'https://gitext.gfz-potsdam.de/ci' \
+  --url 'https://gitext.gfz-potsdam.de/' \
   --registration-token '${token}' \
   --run-untagged=true \
   --locked=true \