[Feature Request] Supress checks on startup

[Feature Request] Supress checks on startup: Is your feature request related to a problem? Please describe.
I run Uptime-Kuma in a large compose file with many services. It does not always start first, and it's too complicated to add it as a dependency for every single service. This means that on startup of my host, it notices a lot of containers that have yet to start being down, and then finds them up on the next check, triggering multiple false notifications.