diff --git a/.env b/.env
index 954023e..36d61d9 100644
--- a/.env
+++ b/.env
@@ -15,8 +15,8 @@
 # https://symfony.com/doc/current/best_practices.html#use-environment-variables-for-infrastructure-configuration
 
 ###> symfony/framework-bundle ###
-APP_ENV=dev
+APP_ENV=${APP_ENV:-dev}
 APP_SECRET=bfc9c288ee3dcce80dec8622c2870f27
 ###< symfony/framework-bundle ###
 
-DATA_DIR='/var/www/html/data'
+DATA_DIR=${DATA_DIR:-/var/www/html/data}