diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2dcb0ccc786e91699ad214036f1271a48aba37bd..ccfec54f80f90e0446fab0def6890f731346cffd 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,5 +1,6 @@
 variables:
   DOCKER_TLS_CERTDIR: ""
+  DB_HOST: $DB_HOST
 docker-build-master:
   # Official docker image.
   image: docker:latest