document PO Token Provider URL

mkdocs/docs/settings/application.md

@@ -168,6 +168,43 @@ There is only one cookie per Tube Archivist instance. This will be shared betwee
 ## PO Token
 Also known as _proof of origin token_, this is a token required in some cases by YT to validate the requests. See the wiki on the yt-dlp repo with more info, particularly the [PO Token Guide](https://github.com/yt-dlp/yt-dlp/wiki/PO-Token-Guide) page.
 
+## PO Token Provider URL
+yt-dlp offers a [plugin](https://github.com/yt-dlp/yt-dlp/wiki/PO-Token-Guide#po-token-provider-plugins) to support for the Proof of Origin (PO) Token.
+In an effort to make it easier for the user, **Tube Archivist** has implemented the plugin:
+
+- [bgutil-ytdlp-pot-provider](https://github.com/Brainicism/bgutil-ytdlp-pot-provider) by [Brainicism](https://github.com/Brainicism)
+
+### Installation
+The following is a suggested docker-compose.yml to use the plugin with the default **Tube Archivist** container.
+The default container creates it's own network named tubearchivist_default.
+Please customize this example to your needs.
+
+```yml
+services:
+  bgutil-provider:
+    image: brainicism/bgutil-ytdlp-pot-provider
+    container_name: bgutil-provider
+    restart: unless-stopped
+    init: true
+    ports:
+      - "4416:4416"
+    environment:
+      - TZ=Etc/UTC
+    networks:
+      - tubearchivist_default
+
+networks:
+  tubearchivist_default:
+    external: true
+```
+
+### Configuration
+If you are using the above example docker container for **bgutil-ytdlp-pot-provider**, here is an example of what the URL would be:
+
+```text
+http://bgutil-provider:4416
+```
+
 ## Integrations
 All third party integrations of **Tube Archivist** will **always** be *opt in*.