Fedora IoT: Roadmap to Bootable containers

[pcdubs]

Notes

• This is a work in progress and in many cases mirrors the other ostree based Fedora editions- CoreOS and AtomicDesktops.

Roadmap

Building and publishing Bootable Container images

• We are currently building a tier-0 container and a tier-1 containers as a part of the Fedora IoT compose process.
• tier-1 images are published to:
  • Quay.io
  • registry.fedoraproject.org/fedora-bootc

bootupd integration

• Fedora 41 change
• include bootupd in the IoT compose
  • f41: enable bootupd
• Testing the latest in Fedora 41, ensuring issues reported in Fedora 40 are resolved.

bootc integration

• Fedora 41 change
• include bootc in the IoT compose
  • F41: add bootc to packages
• include rpm-ostree until all issues resolved
• Bootc is currently root only: no unprivileged interface, no DBus interface
• Related discussions:
  • cli: Add --json support to --check containers/bootc#472
  • bootc status does not report unlocked status containers/bootc#474

DNF5 integration

• Fedora 41 change
• Include dnf5 in the IoT compose:
  • Add DNF5 to Fedora 41 compose ( Fedora 41 Change - DNF and bootc in Image Mode Fedora variants ) #51

Switching to Bootable Container images

• Fedora IoT derived bootc image is defined and composed automatically
• Migrate Fedora IoT users to update via a container image by default: issue to be created

Local package layering

• Discussion of how users can locally layer packages
  • Tracked in https://gitlab.com/fedora/bootc/tracker/-/issues/4

Rebasing on Fedora Bootc manifests

• To be investigated

Rebasing on Fedora Bootc container images

• Better Fedora Infrastructure support for container builds (not yet tracked)
• Support for container deltas / zstd:chunked:
  • Add support for zstd:chunked ostreedev/ostree-rs-ext#608
  • https://gitlab.com/fedora/bootc/tracker/-/issues/9
• Investigate the new Experimental Base Images Builder: https://gitlab.com/fedora/bootc/base-images-experimental

Osbuild

• Investigate changes needed to osbuild-composer for IoT deliverables
  • iot-raw-image
  • iot-installer
  • iot-commit
  • iot-simplified-provisioning

Documentation updates

• Updates to https://docs.fedoraproject.org/en-US/iot/getting-started/

References

See:

• Roadmap to Fedora Bootable Containers
• Fedora CoreOS bootc roadmap
• https://fedoraproject.org/wiki/Initiatives/Fedora_bootc

[travier]

• registry.fedoraproject.org/fedora-bootc

Those are the bootc ones. Don't you want to have IoT dedicated ones?

[pcdubs]

• registry.fedoraproject.org/fedora-bootc

Those are the bootc ones. Don't you want to have IoT dedicated ones?

Yes, covered a little further down:

• Fedora IoT derived bootc image is defined and composed automatically

[adelton]

Does this issue effectively replace #38?

[miabbott]

For broader awareness, I filed an issue in the Fedora bootc project about the size of the base image - https://gitlab.com/fedora/bootc/tracker/-/issues/36