Architecture¶

Universal Blue images are based on the rpm-ostree native container images hosted at quay.io. These are based on the build scripts in this testing repository. In the future, Fedora will likely provide the base container images in a more official fashion.

Main Images¶

ublue-os/config are a collection of udev rules and system services used by all Universal Blue images
ublue-os/akmods kernel modules
ublue-os/main are the main images built from Fedora images

Hardware Enablement Images¶

Images with hardware specific features, built after the main images:

ublue-os/nvidia are the same as the main images but include slip-streamed Nvidia drivers
ublue-os/asus - Asus images
ublue-os/asus-nvidia - Asus with Nvidia images
ublue-os/framework - Framework images
ublue-os/surface - Surface images
ublue-os/surface-nvidia - Surface with Nvidia images

Opinionated Images¶

These tend to have more opinions and are more "end prodcuct" base than base images:

Architecture diagram¶

Diagram of the Universal Blue layered image architecture explaining same things as the above text in a visual manner.

Term explanation¶

OCI: Open Container Initiative, an open governance structure and set of standards for Linux containers.
native container image: a standard OCI image with ostree native container support.
OCI FROM-layer relationship: a reference to Containerfiles where the keyword FROM is used to select the base layer image that the new image is going to be built on top of.
OCI COPY --from-layer relationship: a reference to Containerfiles where the keyword COPY --from is used to copy files from the file system of another OCI image.