diff --git a/oem_application_dockerfile b/oem_application_dockerfile
index 53f8c0e..c82722e 100644
--- a/oem_application_dockerfile
+++ b/oem_application_dockerfile
@@ -50,8 +50,7 @@ USER nobody
 RUN wget https://github.com/open-event-manager/open-event-manager/archive/refs/tags/${VERSION}.tar.gz -O artifact.tar.gz \
     && tar --strip-components=1 -xvzf artifact.tar.gz
 
-RUN COMPOSER_MEMORY_LIMIT=-1 \
-    php composer.phar install \
+RUN php -d memory_limit=-1 composer.phar install \
     --optimize-autoloader \
     --no-interaction \
     --no-progress