Introducing OSBuild
summary
OSBuild is a JSON-driven pipeline that runs isolated stages (each a filesystem-transform step) to install packages with DNF, run grub and systemd tooling inside nspawn containers, then assemble the result into QCOW2 images. It records build environment and hashes so stages are cacheable and reproducible; images are never booted before delivery to avoid duplicated machine IDs. A verification tool named image import compares filesystem checksums, SELinux labels and RPM manifests to achieve functional reproducibility.
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