language: node_js node_js: - 'stable' sudo: required before_install: # if "install" is overridden # Repo for Yarn - sudo apt-key adv --fetch-keys http://dl.yarnpkg.com/debian/pubkey.gpg - echo "deb http://dl.yarnpkg.com/debian/ stable main" | sudo tee /etc/apt/sources.list.d/yarn.list - sudo apt-get update -qq - sudo apt-get install -y -qq yarn cache: yarn: true