Delete variables

.gitlab-ci.yml

@@ -3,12 +3,6 @@ image: docker:19.03.0
 services:
   - docker:19.03.0-dind
 
-variables:
-  DOCKER_DRIVER: overlay
-  DOCKER_HOST: tcp://docker:3000
-  DOCKER_TLS_CERTDIR: ""
-
-
 stages:
   - build
 
@@ -20,7 +14,7 @@ docker_build:
   script:
     - apk add --no-cache curl
     - docker login -u _ -p $HEROKU_TOKEN registry.heroku.com
-    - docker pull registry.heroku.com/secfit-group15/web || true
+    - docker pull registry.heroku.com/secfit-group15/web
     - docker build
       --cache-from registry.heroku.com/secfit-group15/web
       --tag registry.heroku.com/secfit-group15/web