Shooting in the dark

.gitlab-ci.yml

+image: docker:stable
+
+services:
+  - docker:dind
+
+variables:
+  DOCKER_HOST: tcp://docker:2375
+  DOCKER_DRIVER: overlay2
+
 
 before_script:
   - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY