fix docker host for deploy

.gitlab-ci.yml

@@ -33,7 +33,7 @@ deploy_dev:
   tags: 
     - deploy_dev
   variables:
-    DOCKER_HOST: tcp://localhost:2375/
+    DOCKER_HOST: unix:///var/run/docker.sock
   script:
     - echo "deploying dev"
     - docker login -u $DOCKERHUBUSER -p $DOCKERHUBPASSWORD docker.io