Container on App Service keeps getting stopped and terminated

I've got a .Net app running in a Docker container that I'm trying to run on a Linux App Service but as per the (sanitised) log output below from the Platform log stream, it's getting terminated only 4 seconds after it started.

Where can I get information on why this is happening?

Starting container: a0e3af0a_myapp-dev-as.
Starting watchers and probes.
Starting metrics collection.
Container is running.
Container start method finished after 1990 ms.
Container is terminating. Grace period: 0 seconds.
Stop and delete container. Retry count = 0

Timestamps removed as the forum doesn't seem to like log output?