We usually expect docker to monitor the shim process representing the container process inside the VM. And by doing so, it sends a kata-runtime delete <container-id> when it sees the shim going away. But unfortunately, something changed between 18.06 and 18.09 that prevents this logic from working as expected here.

Reference on docker repo: moby/moby#38233

/cc @amshinde @egernst @grahamwhaley @jodh-intel