NItro VM clean shutdown

[nshyrei]

Hello, an issue came up when working on a project built on top of a Nitro VM: when the enclave is terminated the functionality that would be present in a regular docker container is not present in Nitro as the VM gets powered off immediately. Thus things like flushing unwritten data in disc cache for example don't exist. Is there a way to have the Nitro infrastructure do a clean shutdown of the enclave’s virtual machine instead of just immediately powering it off, or maybe have some sort of hook logic placed that will execute user-specific code inside an enclave before the VM shuts down? If not present can this feature potentially be added?