diff --git a/deploy/docker/Dockerfile.prod b/deploy/docker/Dockerfile.prod
index b31759e..6b0a936 100644
--- a/deploy/docker/Dockerfile.prod
+++ b/deploy/docker/Dockerfile.prod
@@ -45,6 +45,7 @@ RUN apt-get update && apt-get install -y \
 
 # PHP production config
 RUN mv "$PHP_INI_DIR/php.ini-production" "$PHP_INI_DIR/php.ini"
+COPY docker/php/config/php.ini "$PHP_INI_DIR/conf.d/99-app.ini"
 
 # PHP-FPM: forward worker output to stderr for docker logs
 RUN echo "catch_workers_output = yes" >> /usr/local/etc/php-fpm.d/www.conf \