Update .gitlab-ci.yml

.gitlab-ci.yml

@@ -7,15 +7,15 @@ build:
   image: docker:stable
   services:
     - docker:dind
+  variables:
+    DOCKER_HOST: tcp://docker:2375
+    DOCKER_DRIVER: overlay2
   script:
     - docker login -u "gitlab-ci-token" -p ${CI_JOB_TOKEN} ${CI_REGISTRY}
     - docker build -t ${CI_REGISTRY}/destream-public/destream-blockchain .
     - docker push ${CI_REGISTRY}/destream-public/destream-blockchain
   environment:
     name: ${CI_COMMIT_REF_NAME}
-  variables:
-    DOCKER_HOST: tcp://docker:2375
-    DOCKER_DRIVER: overlay2
   only:
     - test