bootc-image-builder: Build your entire OS from a Containerfile

We also have a GUI for trying this out!

https://github.com/podman-desktop/extension-bootc

We’re also starting to see other projects adopt a “OS as a Container image” such as Bazzite: https://bazzite.gg/ using bootc :)

Feel free to ask any questions!

You can also achieve this with your current system

> nix-build '<nixpkgs/nixos>' -A vm -I nixpkgs=channel:nixos-25.05 -I nixos-config=./configuration.nix

I use nixos btw

Huh, this is kinda wild. So for esxi images, this would seem to beat/potentially be simpler than the traditional Packer + interacting with an ISO on esxi infra, yes?

> A container for deploying bootable container images.

...as long as the images are in the Red Hat family (Fedora, CentOS Stream, RHEL).

Does bootc-image-builder build Native Containers?

Do Native Containers work as VM images that can be stored in an OCI Image/Artifact/Package Registry?

I've been mentioning Native Containers since I realized that was how bazzite works now.

Is vagrant necessary anymore if host, vm, and container images can all be signed and stored in an OCI Image store?

From https://news.ycombinator.com/item?id=44137501 re: Firecracker and Microsandbox VMs :

> ostree native containers are bootable host images that can also be built and signed with a SLSA provenance attestation; https://coreos.github.io/rpm-ostree/container/

ublue-os/image-template: https://github.com/ublue-os/image-template :

> Build your own custom Universal Blue Image

ublue-os/akmods has nvidia GPU drivers, nvidia-open, zfs: https://github.com/ublue-os/akmods :

> A caching layer for pre-built Fedora akmod RPMs

> OCI images providing a set of cached kernel RPMs and extra kernel modules to Universal Blue images. Used for better hardware support and consistent build process.

nvidia-container-toolkit (CDI) is necessary for --gpus=all to do CUDA and libEGL 3D with podman. Is this also already installed in bazzite?

ublue-os/toolboxes: "quadlets and systemd service units for management", boxkit : https://github.com/ublue-os/toolboxes#images

ublue-os/devcontainer .devcontainer/devcontainer.json: https://github.com/ublue-os/devcontainer/blob/main/src/base/...

It looks like the Just Justfile 40-nvidia.just has moved due to image topology simplification? https://news.ycombinator.com/item?id=39364975 :

> ublue-os/config//build/ublue-os-just/40-nvidia.just defines the `ujust configure-nvidia` and `ujust toggle-nvk` commands