Embed env_vars guidance in docs

piwigo/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.
 
 ## 15.6.0 (25-07-2025)
 - Update to latest version from linuxserver/docker-piwigo (changelog : https://github.com/linuxserver/docker-piwigo/releases)

piwigo/README.md

@@ -39,6 +39,8 @@ 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:81> or through the sidebar using Ingress.
 Configurations can be done through the app webUI, except for the following options.
 
@@ -84,3 +86,5 @@ This addon supports mounting both local drives and remote SMB shares:
 - **Remote shares**: See [Mounting Remote Shares in Addons](https://github.com/alexbelgium/hassio-addons/wiki/Mounting-remote-shares-in-Addons)
 
 [repository]: https://github.com/alexbelgium/hassio-addons
+
+

piwigo/config.yaml

@@ -89,7 +89,7 @@ privileged:
   - DAC_READ_SEARCH
 schema:
   env_vars:
-    - name: match(^[A-Z0-9_]+$)
+    - name: match(^[A-Za-z0-9_]+$)
       value: str?
   PGID: int
   PUID: int