feat(hermes): build from local Dockerfile with voice support

- Change hermes service from image: to build:
- Enables custom image with libportaudio2 and voice Python packages

ai/compose.yml

@@ -26,7 +26,9 @@ services:
       - "traefik.http.routers.webui-https.tls.certresolver=njalla"
 
   hermes:
-    image: nousresearch/hermes-agent:latest
+    build:
+      context: ./hermes
+      dockerfile: Dockerfile
     container_name: hermes
     restart: always
     # Gateway run enables the internal API server on port 8642