diff --git a/docker-compose.yml b/docker-compose.yml
index 5a3479f..cbc8870 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -93,10 +93,9 @@ services:
       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
+      # Eine Zeile ohne Leerzeichen: der Entrypoint uebergibt den Wert
+      # unquoted, Spaces wuerden als zusaetzliche Argumente zerfallen.
+      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
       TZ: Europe/Berlin
     extra_hosts: