Update .gitlab-ci.yml

.gitlab-ci.yml

 image: ruby:2.3
 
-variables:
-  JEKYLL_ENV: production
-
 before_script:
   - bundle install
 
-test:
-  stage: test
-  script:
-  - bundle exec jekyll build -d test
-  artifacts:
-    paths:
-    - test
-  except:
-  - master
-  
 pages:
   stage: deploy
   script:
@@ -26,3 +13,10 @@ pages:
   only:
   - gh-pages
 
+test:
+  stage: test
+  script:
+  - bundle exec jekyll build -d test
+  artifacts:
+    paths:
+    - test
\ No newline at end of file