Since we have a ruby dependency, I added a Gemfile for bundler to properly handle ruby dependencies and further simplify the build process

Gemfile

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+source 'https://rubygems.org'
+gem "sass"

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    sass (3.4.16)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  sass
+
+BUNDLED WITH
+   1.10.6