Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -1,4 +1,4 @@
-image: docker:stable
+image: gitlab/dind
 
 services:
   - docker:dind
@@ -11,6 +11,7 @@ variables:
   DOCKER_DRIVER: overlay2
   
 before_script:
+  - docker info
   - docker login -u $DOCKER_USER -p $DOCKER_PWD docker.infra.flowdat.com
 
 build_branch: