Prep for working on custom base images. We want to support
operating on rootfs that may not have been generated by
rpm-ostree.
Split this out as something that can gets passed separately
to `rpm-ostree compose postprocess/commit`.
This is the opposite workaround for
https://github.com/ostreedev/ostree-rs-ext/issues/612
However, we still need to finally make `/opt` a directory
to complete this, which currently wants changes in rpm-ostree.
(Or, we could tweak our build process to inject as a container
afterwards)
This partially reverts commit 7977ead6e4 and
effectively migrates the change from 8f5be09371
and 14ab1c5847
to here.
Signed-off-by: Colin Walters <walters@verbum.org>
Colin Walters