diff --git a/mariadb/Dockerfile b/mariadb/Dockerfile
index 0dcb948..1929726 100644
--- a/mariadb/Dockerfile
+++ b/mariadb/Dockerfile
@@ -4,6 +4,8 @@ LABEL maintainer="Mahmoud Zalt <mahmoud@zalt.me>"
 
 COPY my.cnf /etc/mysql/conf.d/my.cnf
 
+RUN chmod -R 644 /etc/mysql/conf.d/my.cnf
+
 CMD ["mysqld"]
 
 EXPOSE 3306