postprocess:
  # Set the fallback hostname to `localhost`. This can be removed
  # once we are based on Fedora 37+.
  # See https://github.com/coreos/fedora-coreos-tracker/issues/902
  - |
    #!/usr/bin/env bash
    set -euxo pipefail
    source /etc/os-release
    if [ -z "${DEFAULT_HOSTNAME:-}" ]; then
      echo 'DEFAULT_HOSTNAME=localhost' >> /usr/lib/os-release
    fi