The scope of work is to:

• Create a documented and supported procedure for MicroShift bootc image delta updates
  • See MicroShift Using ostree Delta Upgade with Image Mode
• Implement a CI job that tests this mechanism

References:

• https://ostreedev.github.io/ostree/copying-deltas/#static-deltas-for-offline-updates
• https://sigs.centos.org/automotive/building/creating_static_deltas/#making-offline-updates
• https://docs.redhat.com/en/documentation/red_hat_enterprise_linux/9/html/composing_i[…]ge-updates_composing-installing-managing-rhel-for-edge-images
• https://github.com/coreos/rpm-ostree/blob/main/docs/container.md#mapping-container-images-back-to-ostree
• https://github.com/containers/tar-diff 

Previous work:

• https://github.com/arthur-r-oliveira/bootc-embeeded-containers/blob/main/delta-updates-experimental.md 
• https://github.com/arthur-r-oliveira/bootc-embeeded-containers?tab=readme-ov-file#experimental---delta-updates-with-tar-diff 
• https://docs.google.com/document/d/1L24C1ddqL6YehtXYV0RXjSEhrYs8wT2vlXFY6fcMvkk/edit