diff --git a/php/Dockerfile b/php/Dockerfile
index e6235a5..aa6b523 100644
--- a/php/Dockerfile
+++ b/php/Dockerfile
@@ -1,7 +1,10 @@
 FROM php:7.2-fpm-alpine
-RUN apk --no-cache add zlib-dev \
+RUN apk --no-cache add zlib-dev shadow \
     && docker-php-ext-install zip pdo_mysql mysqli
 
+# change uid and gid of www-data
+RUN usermod -u 1000 www-data && groupmod -g 1000 www-data
+
 # install composer
 RUN php -r "copy('https://getcomposer.org/installer', 'composer-setup.php');" \
     && php composer-setup.php --install-dir=/usr/local/bin --filename=composer \