Files/Directories

• /etc/systemd/nspawn/xcache.nspawn: configuration for lauching containers from the xcache image, e.g. bind mounts
• /etc/pki/rpm-gpg, /etc/yum.repos.d: yum repositories and gpg keys on the host system - used by dnf to build new images
• /var/local/mkosi: build dir to make new images with mkosi
  • mkosi.default: image definition file (distribution, packages)
  • mkosi.extra: extra files/directories to be copied into the image (yum repos, systemd service file)
  • mkosi.postinst: extra commands that are executed inside the container at the end (install extra packages not in the default repositories)
• /usr/local/bin/build_image.sh: script to build a new image without mkosi

Further information on the wiki