Abort if composer.lock is not checked in
Abort if composer.lock is not checked in

nsg/dokku-buildpack-picocms,ryosuzuki/php-buildpack,Scalingo/php-buildpack,CHH/heroku-buildpack-php,stof/heroku-buildpack-php,stof/heroku-buildpack-php,bobmaerten/dokku-buildpack-php,jstacoder/heroku-buildpack-php-1,OKAMca/heroku-buildpack-php,nsg/dokku-buildpack-picocms,Jonatasmz/php-buildpack,pierredup/packager-buildpack-php,Scalingo/php-buildpack,penciu/apache,penciu/apache,Jonatasmz/php-buildpack,CHH/heroku-buildpack-php,ryosuzuki/php-buildpack,Scalingo/php-buildpack,AlphaStaxLLC/heroku-buildpack-php-custom,bobmaerten/dokku-buildpack-php,pierredup/packager-buildpack-php,AlphaStaxLLC/heroku-buildpack-php-custom,mraymond/heroku-buildpack-php,AlphaStaxLLC/heroku-buildpack-php-custom,CHH/heroku-buildpack-php,penciu/apache,jstacoder/heroku-buildpack-php-1,stof/heroku-buildpack-php,OKAMca/heroku-buildpack-php,cachethq/cachet-buildpack,mraymond/heroku-buildpack-php,OKAMca/heroku-buildpack-php