fix: IndeedHub demo clone uses GITEA_TOKEN build arg

Private repo needs auth — pass GITEA_TOKEN as env var in Portainer,
never hardcoded. Or make the repo public to skip auth entirely.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

docker-compose.demo.yml

@@ -45,6 +45,8 @@ services:
     build:
       context: ./indeedhub-demo
       dockerfile: Dockerfile
+      args:
+        GITEA_TOKEN: ${GITEA_TOKEN:-}
     container_name: indeedhub
     ports:
       - "7777:7777"