Allow setting a new image for a service

[xavier-romero]

Background & motivation

For testing upgrading versions of production environment I'd like to use Kurtosis to fully reproduce/document the procedure.
For this, I'd love to have the option to JUST change the docker image for a running service.

Desired behaviour

I'd love to be able to do something like this:
kurtosis service update enclave_name service_name --image whatever_docker_image:tag
So that just:

• Stops and removes the docker
• Recreates the service with the new image maintaining all existing config/properties/files/ports/etc.

Whatever impact it could have on the whole stack is under user responsability.

How important is this to you?

Painful; the lack of this feature makes using Kurtosis frictionful.

What area of the product does this pertain to?

CLI: the Command Line Interface