fix: Webhook auf Port 9000 + /deploy URL-Prefix

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

docker-compose.staging.yml

@@ -168,7 +168,7 @@ services:
     container_name: nexxo_deployer
     restart: unless-stopped
     ports:
-      - "9001:9001"
+      - "9000:9000"
     environment:
       DEPLOY_WEBHOOK_SECRET: ${DEPLOY_WEBHOOK_SECRET}
     volumes:

docker/webhook/entrypoint.sh

@@ -1,4 +1,4 @@
 #!/bin/sh
 # Substituiert ${DEPLOY_WEBHOOK_SECRET} im hooks.json-Template
 envsubst < /etc/webhook/hooks.json > /tmp/hooks.json
-exec webhook -hooks /tmp/hooks.json -verbose -port 9001
+exec webhook -hooks /tmp/hooks.json -verbose -port 9000 -urlprefix ""