Separate deploy from build

.gitlab-ci.yml

@@ -5,19 +5,32 @@ variables:
   HTTPS_PROXY: http://proxy.cs.ui.ac.id:8080
 
 stages:
+  - build
   - deploy
 
-deploy:
-  image: ruby:2.3-alpine3.8
+build:
+  image: ruby:2.3
   stage: deploy
   script:
     - apk add curl zip
     - bundle install
     - bundle exec jekyll build -d public
-    - sh deploy.sh
   artifacts:
     paths:
       - public
   only:
     refs:
       - master
+
+deploy:
+  blog:deploy:
+  stage: deploy
+  image: alpine:3.9
+  variables:
+    HTTP_PROXY: http://proxy.cs.ui.ac.id:8080
+    HTTPS_PROXY: http://proxy.cs.ui.ac.id:8080
+  script:
+    - apk add curl zip
+    - sh deploy.sh
+  dependencies:
+    - build