diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 13f96c72..cf063c46 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -12,15 +12,15 @@ variables:
   POSTGRES_USER: "postgres"
   DATABASE_URL: "postgres"
   MIX_ENV: "test"
+  DOCKER_TLS_CERTDIR: "/certs"
 
 services:
 - name: postgres:12
+- name: docker:19.03.12-dind
 
 prebuild:
   stage: prebuild_and_test
   image: "docker"
-  services:
-    - docker:19.03.12-dind
   script:
     - docker pull $CI_REGISTRY_IMAGE:latest || true
     - docker build --cache-from $CI_REGISTRY_IMAGE:latest -t $CI_REGISTRY_IMAGE .