diff --git a/docker-compose.yml b/docker-compose.yml
index 5501a4b..5a3479f 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -91,7 +91,10 @@ services:
       # Runner-Identitaet in ./runner-data/.runner und .env kann geleert werden.
       GITEA_RUNNER_REGISTRATION_TOKEN: ${RUNNER_TOKEN:-}
       GITEA_RUNNER_NAME: builder-1
+      # ubuntu-latest: Standard-Label der chat-gitops-Workflows (leichtes Image);
+      # linux-build/win-wine: Electron-Builds (Linux nativ / Windows via Wine).
       GITEA_RUNNER_LABELS: >-
+        ubuntu-latest:docker://node:20-bookworm,
         linux-build:docker://electronuserland/builder:22,
         win-wine:docker://electronuserland/builder:wine
       CONFIG_FILE: /config.yaml