If you wish to build a Linux image from scratch...
summary
Image Builder produces bootable Fedora/CentOS/RHEL images by composing JSON manifests of staged pipelines (RPM, bootloader, cloud-init, systemd services) via osbuild and higher-level rules in osbuild-composer. Current setup supports four architectures, multiple clouds, and builds that take 5–15 minutes and can deploy AMIs/ISOs or run on-premises after dnf install. The project formalizes distribution/platform/environment/workload as layered effects so valid combinations compose automatically; image definitions live as exported blueprint TOML files that can be versioned and extended with custom stages.
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