Automate n8n updates with version checking and Portainer webhook

🔄 Purpose of the Workflow: The Update-N8N workflow is designed to automatically trigger a (Portainer) webhook to update an N8N container, but only if a new version of N8N is available.

⚙️ Detailed Workflow Steps: 🕒 Scheduled Trigger The workflow runs every 16 hours at minute 8 using a schedule trigger node.

🌐 Fetch Latest N8N Version It sends an HTTP GET request to https://registry.npmjs.org/n8n/latest to retrieve the latest published N8N version from the npm registry.

📈 Get Currently Running Local Version Another HTTP GET request is sent to https://127.0.0.1/metrics (likely the Prometheus metrics endpoint of the local N8N instance) to extract the currently installed N8N version.

🧠 Version Comparison The workflow compares the local version (parsed from metrics) with the latest available version.

📬 Trigger Portainer Webhook If the versions do not match (i.e., an update is available), a POST request is sent to a webhook URL, which might be a Portainer webhook that redeploys or updates the N8N container/stack.

✅ Key Benefits: No manual checks or updates needed.

Triggers only when a new version is available.