language: ruby rvm: - 2.4.1 addons: apt: packages: - openjdk-8-jre # install Java8 as required by vnu.jar - python3 - python3-pip - python3-wheel install: - pip3 install html5validator --user # Assume bundler is being used, therefore # the `install` step will run `bundle install` by default. script: - ./build.sh - html5validator --root _site/ --also-check-css --blacklist classic sudo: false # route your build to the container-based infrastructure for a faster build cache: bundler # caching bundler gem packages will speed up build