feat(hermes): add chromium for local browser tool

- Create custom Dockerfile extending nousresearch/hermes-agent with chromium installed
- Update compose.yml to build from local Dockerfile instead of pulling image
- Enables browser tool to work without Browserbase cloud service

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