Add support for compile time commands
Add support for compile time commands

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