diff --git a/Dockerfile-alpine.template b/Dockerfile-alpine.template
index 905077bcf..2b4c813bc 100644
--- a/Dockerfile-alpine.template
+++ b/Dockerfile-alpine.template
@@ -79,11 +79,12 @@ RUN set -ex; \
 # see https://docs.nextcloud.com/server/latest/admin_manual/installation/server_tuning.html#enable-php-opcache
 ENV PHP_MEMORY_LIMIT 512M
 ENV PHP_UPLOAD_LIMIT 512M
+ENV PHP_OPCACHE_MEMORY_CONSUMTION 128
 RUN { \
         echo 'opcache.enable=1'; \
         echo 'opcache.interned_strings_buffer=32'; \
         echo 'opcache.max_accelerated_files=10000'; \
-        echo 'opcache.memory_consumption=128'; \
+        echo 'opcache.memory_consumption=${PHP_OPCACHE_MEMORY_CONSUMTION}'; \
         echo 'opcache.save_comments=1'; \
         echo 'opcache.revalidate_freq=60'; \
         echo 'opcache.jit=1255'; \