WUD (What's Up Docker?)
Container image update watcher for Docker
3.7k stars 137 forks last commit first released MIT
Actively maintained
Last commit 25 Aug 2026.
WUD (What’s Up Docker?) is a service that watches your running Docker containers and checks whether newer container images are available for the tags you use. It helps you stay informed about updates without manually tracking image versions.
Key Features
- Monitors Docker containers and detects when updated images are published
- Compares image versions using semantic versioning when applicable
- Notification-oriented workflow to inform you about available updates
- Designed to run alongside your existing Docker setup
Use Cases
- Track updates for homelab and self-hosted Docker stacks
- Monitor production or staging containers for new image releases
- Maintain visibility into version drift across multiple containers
WUD is a lightweight companion service for Docker users who want timely awareness of container image updates and a clearer path to keeping stacks current.
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