diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index cbcb1df2e..09835283a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -264,6 +264,7 @@ docker:test:
     - docker ps
     - ls /sys/class/net
     - cat /etc/hosts
+    - ls /var/lib/docker/volumes/config/_data
     - cat /var/lib/docker/volumes/config/_data/config.yaml
     - cp etc/config/config.example.dind.yaml /var/lib/docker/volumes/config/_data/config.yaml
     - docker exec -it knot-resolver-${PLATFORM} kresctl restart