Embed env_vars guidance in docs

ubooquity/CHANGELOG.md

@@ -1,3 +1,4 @@
+- Added support for configuring extra environment variables via the `env_vars` add-on option alongside config.yaml. See https://github.com/alexbelgium/hassio-addons/wiki/Add-Environment-variables-to-your-Addon-2 for details.
 
 ## 3.1.0 (23-08-2025)
 - Update to latest version from linuxserver/docker-ubooquity (changelog : https://github.com/linuxserver/docker-ubooquity/releases)

ubooquity/README.md

@@ -49,6 +49,8 @@ comparison to installing any other Hass.io add-on.
 
 ## Configuration
 
+Use the add-on `env_vars` option to pass extra environment variables (uppercase or lowercase names). See https://github.com/alexbelgium/hassio-addons/wiki/Add-Environment-variables-to-your-Addon-2 for details.
+
 Webui can be found at <http://homeassistant:PORT> or through the sidebar using Ingress.
 The default username/password is described in the startup log.
 Configurations can be done through the app webUI, except for the following options.
@@ -113,3 +115,5 @@ Create an issue on the [repository github][repository], or ask on the [home assi
 ![alt text](https://vaemendis.net/ubooquity/data/images/screenshots/books_library.jpg)
 
 [repository]: https://github.com/alexbelgium/hassio-addons
+
+

ubooquity/config.yaml

@@ -93,7 +93,7 @@ privileged:
   - DAC_READ_SEARCH
 schema:
   env_vars:
-    - name: match(^[A-Z0-9_]+$)
+    - name: match(^[A-Za-z0-9_]+$)
       value: str?
   PGID: int
   PUID: int