let the manifest/used licenses become part of image

Hi,
think it makes sense to provide in the image itself the manifest and
what licenses are used.

I want to copy the *.manifest to some place in filesystem, but that
doesn't work. Even if done in IMAGE_POSTPROCESS_COMMAND, the manifest
file seems to be generated at a later stage.
Although here is stated something different:
https://docs.yoctoproject.org/overview-manual/concepts.html#image-generation

Any hint how to work around that? Or am I completly wrong?
Best regards,
Arno

Another thing. The tmp/deploy/license folder keeps all ever used
packages. How to get only thoses licenses that used (as in manifest)?