Archived

This project is no longer maintained. Please use upstream project moving forward.

Universal Blue ISO Generator

This action is used to generate the ISO images for any Fedora Atomic based OCI images (bootc based images not currently supported). This project relies on the command feature in Anaconda ostreecontainer.

Makefile

A Makefile is provided for ease of use. There are separate targets for each file generated, however make can be used to generate the final image and make clean can be used to clean up the workspace.

See Customizing for information about customizing the image that gets created.

Container

A container with the necessary tools already installed is provided at ghcr.io/ublue-os/isogenerator:latest

To use the container file, run docker run --privileged --volume .:/isogenerator/output ghcr.io/ublue-os/isogenerator.

This will create an ISO with the baked in defaults of the container image.

See Customizing for information about customizing the image that gets created. The variable can either be defined as environment variables or as command arguments. Examples:

Creating Universal Blue Silverblue ISO

docker run --rm --privileged --volume .:/isogenerator/output -e VERSION=39 -e IMAGE_NAME=silverblue-main -e IMAGE_TAG=latest -e VARIANT=Silverblue ghcr.io/ublue-os/isogenerator:39

# Requires sudo to run
sudo podman run --rm --privileged --volume .:/isogenerator/output -e VERSION=39 -e IMAGE_NAME=silverblue-main -e IMAGE_TAG=latest -e VARIANT=Silverblue ghcr.io/ublue-os/isogenerator:39

Creating Universal Blue Kinoite ISO

docker run --rm --privileged --volume .:/isogenerator/output -e VERSION=39 -e IMAGE_NAME=kinoite-main -e IMAGE_TAG=latest -e VARIANT=Kinoite ghcr.io/ublue-os/isogenerator:39

# Requires sudo to run
sudo podman run --rm --privileged --volume .:/isogenerator/output -e VERSION=39 -e IMAGE_NAME=kinoite-main -e IMAGE_TAG=latest -e VARIANT=Kinoite ghcr.io/ublue-os/isogenerator:39

Customizing

Inputs

The following variables can be used to customize the create image.

Variable	Description	Default Value
ARCH	Architecture for image to build	x86_64
VERSION	Fedora version of installer to build	39
IMAGE_REPO	Repository containing the source container image	ghcr.io/ublue-os
IMAGE_NAME	Name of the source container image	base-main
IMAGE_TAG	Tag of the source container image	VERSION
EXTRA_BOOT_PARAMS	Extra params used by grub to boot the anaconda installer	[empty]
VARIANT	Source container variant*	Kinoite
WEB_UI	Enable Anaconda WebUI (experimental)	false
ENROLLMENT_PASSWORD	Password used to enroll secure boot key into BIOS**	isogenerator
SECURE_BOOT_KEY_URL	URL used to download your secure boot key for enrollment**	[empty]

*Available options for VARIANT can be found by running dnf provides system-release. Variant will be the third item in the package name. Example: fedora-release-kinoite-39-34.noarch will be kinoite

**NOTE: ENROLLMENT_PASSWORD and SECURE_BOOT_KEY_URL are not required. They are only required if you are creating specific kernel modules or if you are using Universal Blue Kernel Modules.

Our public key for our kmods is located here: https://github.com/ublue-os/akmods/raw/main/certs/public_key.der

Outputs

This action outputs some useful values for you to use further on in your workflow.

Output	Description
output-directory	The directory containing ISO and checksum files
iso-path	The full path to the ISO file
checksum-path	The full path to the checksum file

VSCode Dev Container

There is a dev container configuration provided for development. By default it will use the existing container image available at ghcr.io/ublue-os/isogenerator, however, you can have it build a new image by editing .devcontainer/devcontainer.json and replacing image with build. Ctrl+/ can be used to comment and uncomment blocks of code within VSCode.

The code from VSCode will be available at /workspaces/isogenerator once the container has started.

Privileged is required for access to loop devices for lorax.

Use existing image

{
	"name": "Existing Dockerfile",
	// "build": {
	// 	"context": "..",
	// 	"dockerfile": "../Containerfile",
	// 	"args": {
	// 		"version": "39"
	// 	}
	// },
	"image": "ghcr.io/ublue-os/isogenerator:latest",
	"overrideCommand": true,
	"shutdownAction": "stopContainer",
	"privileged": true
}

Build a new image

{
	"name": "Existing Dockerfile",
	"build": {
		"context": "..",
		"dockerfile": "../Containerfile",
		"args": {
			"version": "39"
		}
	},
	//"image": "ghcr.io/ublue-os/isogenerator:latest",
	"overrideCommand": true,
	"shutdownAction": "stopContainer",
	"privileged": true
}

Special Thanks

This code was originally forked from https://github.com/JasonN3/build-container-installer and adapted for the needs of Universal Blue.