back to previous and add only policy

.gitlab-ci.yml

 .shared_dind_runners:
   tags:
-  - dind
-
-image: docker:19.03.12
-services:
-  - docker:19.03.12-dind
-
-before_script:
-  - docker info
+    - dind
 
 variables:
   DOCKER_HOST: tcp://docker:2375
+  DOCKER_DRIVER: overlay2
   DOCKER_TLS_CERTDIR: ""
 
 stages:
   - moringa-docker
 
-base-otb:
+moringa-docker:
   extends:
     - .shared_dind_runners
+  image: docker:19.03.12
+  services:
+    - docker:19.03.12-dind
   stage: moringa-docker
   script:
     - docker build -t moringa .
+
+