single-line YAML syntax for single commands in .circleci/config.yml
single-line YAML syntax for single commands in .circleci/config.yml

emeth-/heroku-buildpack-php,heroku/heroku-buildpack-php,emeth-/heroku-buildpack-php,heroku/heroku-buildpack-php,heroku/heroku-buildpack-php,heroku/heroku-buildpack-php,emeth-/heroku-buildpack-php,emeth-/heroku-buildpack-php