diff --git a/Dockerfile b/Dockerfile
index 958948c..ca7e207 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -6,7 +6,7 @@ RUN apt install -y sendmail libpng-dev
 
 RUN docker-php-ext-install gd
 
-RUN echo 'upload_max_filesize = 30M;post_max_size = 30M; max_execution = 600; max_input_time = 600' >> /usr/local/etc/php/conf.d/docker-php-memlimit.ini;
+RUN printf 'upload_max_filesize=30M;\npost_max_size=30M;\nmax_execution_time=600;\nmax_input_time=600;\n' >> /usr/local/etc/php/conf.d/docker-php-memlimit.ini;
 
 COPY database /var/www/database