Wire Node-RED update events to structured update log file

monitoring/prometheus/docker-compose.yml

@@ -197,6 +197,7 @@ services:
       - no-new-privileges:true
     volumes:
       - ${PROJECT_ROOT}/monitoring/telegraf/telegraf.conf:/etc/telegraf/telegraf.conf:ro
+      - ${PROJECT_ROOT}/monitoring/node-red/data:/var/log/node-red:ro
     networks:
 #      - edge
       - monitor