Use build.rb, appearantly ruby -r doesn't work with bundle

.gitlab-ci.yml

@@ -11,7 +11,7 @@ pages:
   stage: deploy
   script:
   - bundle exec pluto update planet.ini
-  - bundle exec ruby -r 'jekyll/planet' -e 'JekyllPlanet.main'
+  - bundle exec build.rb
   - bundle exec jekyll build -d public
   artifacts:
     paths:

build.rb

+#!/usr/bin/env ruby
+
+require 'jekyll/planet'
+
+JekyllPlanet.main