* big pre-summer refactoring

+ introduce php7.4 and stay only php7.3 as max older version
+ workspace with php7.4 in future commits

dockerfiles/php-fpm/xdebug.sh

@@ -2,9 +2,10 @@
 
 # NOTE: At the moment, this has only been confirmed to work with PHP 7
 
+PHP_VERSION=$1
 
 # Grab full name of php-fpm container
-PHP_FPM_CONTAINER=$(docker ps | grep php-fpm | awk '{print $1}')
+PHP_FPM_CONTAINER=$(docker ps | grep php-fpm${PHP_VERSION} | awk '{print $1}')
 
 
 # Grab OS type