For each version avaliable there is a branch related, we must try to keep then with the some dependencies when possible.
Branch naming rules:
/^[0-9\.]+/=> PHP cli versions, must have the same dependencies as its related images (v9.99-apache, v9.99-fpm)/^[0-9\.]+-apache/=> Apache with PHP/^[0-9\.]+-fpm/=> PHP-FPM version/^[0-9\.]+-\w+-with-.*/=> A variation of thev9.99-(apache|fpm)with some extra dependencie or detail.