feat(cicd): add variables for mr job

.gitlab-ci.yml

@@ -126,6 +126,10 @@ test:
 #       -Dsonar.qualitygate.wait=true
 
 mr:
+  variables:
+    DOCKER_TLS_CERTDIR: ''
+    DOCKER_HOST: tcp://docker:2375/
+    DOCKER_DRIVER: overlay2
   image: ${CI_DEPENDENCY_PROXY_DIRECT_GROUP_IMAGE_PREFIX}/docker:18.09
   stage: build
   only: