diff --git a/.env.example b/.env.example
index 2e4c5ca..ae33fe0 100644
--- a/.env.example
+++ b/.env.example
@@ -134,7 +134,12 @@ DECOMPOSEDS3_ACCESS_KEY=
 DECOMPOSEDS3_SECRET_KEY=
 # S3 bucket. Defaults to "opencloud"
 DECOMPOSEDS3_BUCKET=
-
+#
+# For testing purposes, add local minio S3 storage to the docker-compose file.
+# The leading colon is required to enable the service.
+DECOMPOSEDS3_MINIO=:minio.yml
+# Minio domain. Defaults to "minio.opencloud.test".
+MINIO_DOMAIN=
 
 # Define SMTP settings if you would like to send OpenCloud email notifications.
 # To actually send notifications, you also need to enable the 'notifications' service