Enhancement: Add service discovery labels support for multiple homepage instances (#2340)

docs/configs/docker.md

@@ -201,6 +201,22 @@ In order to detect every service within the Docker swarm it is necessary that se
 ...
 ```
 
+## Multiple Homepage Instances
+
+The optional field `instanceName` can be configured in [settings.md](settings.md#instance-name) to differentiate between multiple homepage instances.
+
+To limit a label to an instance, insert `.instance.{{instanceName}}` after the `homepage` prefix.
+
+```yaml
+labels:
+  - homepage.group=Media
+  - homepage.name=Emby
+  - homepage.icon=emby.png
+  - homepage.instance.internal.href=http://emby.lan/
+  - homepage.instance.public.href=https://emby.mydomain.com/
+  - homepage.description=Media server
+```
+
 ## Ordering
 
 As of v0.6.4 discovered services can include an optional `weight` field to determine sorting such that:

docs/configs/settings.md

@@ -404,6 +404,16 @@ or per-service (`services.yaml`) with:
 
 If you have both set, the per-service settings take precedence.
 
+## Instance Name
+
+Name used by automatic docker service discovery to differentiate between multiple homepage instances.
+
+For example:
+
+```yaml
+instanceName: public
+```
+
 ## Hide Widget Error Messages
 
 Hide the visible API error messages either globally in `settings.yaml`: