Copying signed binary as part of build process

[jefffhaynes]

Is there any appropriate way to copy the (signed) output from the build process into a directory for artifact keeping? Ideally the output could be copied to something that matches up with the binary version set via CONFIG_MCUBOOT_EXTRA_IMGTOOL_ARGS.

Obviously this could be done externally to the build process but it would be great if there was a built-in way.