diff --git a/Dockerfile b/Dockerfile
index 1e2bb7b..915cdc1 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -46,6 +46,12 @@ COPY --from=composer:2 /usr/bin/composer /usr/bin/composer
 ENV COMPOSER_ALLOW_SUPERUSER=1
 ENV COMPOSER_MEMORY_LIMIT=-1
 
+# shell bash preference
+RUN sed -i " \
+    s|root:x:0:0:root:/root:/bin/ash|root:x:0:0:root:/root:/bin/bash|g; \
+    s|postgres:x:70:70:PostgreSQL user:/var/lib/postgresql:/bin/sh|postgres:x:70:70:PostgreSQL user:/var/lib/postgresql:/bin/bash|g" \
+    /etc/passwd
+
 WORKDIR /var/www/app
 
 CMD ["php-fpm"]