explained auth default behavior
@@ -421,7 +421,8 @@ meta:
```
`type` can be either `env` for auth via environment variables or `file` for auth via yaml credentials
file. `path` is required for `file` configuration, it should be a yaml credentials file location
-relative to `meta.storage.path` (or, in other words, a storage key).
+relative to `meta.storage.path` (or, in other words, a storage key). Docker image uses `env` credentials by default,
+to change default settings, mount custom config file to `/etc/artipie.yml`.
### Environment variables
The simplest way to start Artipie with authentication is to configure single user via
