function upgrade {
  local container_version host_version
  container_version=$(</var/lib/miaou-bash/semver_current)
  host_version=$(<"$MIAOU_BASH_DIR"/.semver_git_tag)
  if [[ "$container_version" != "$host_version" ]]; then
    echo -n "MIAOU-BASH: initiate new version: $host_version"
    [[ "$UID" -ne 0 ]] && echo " (CTRL+c to bypass)" || echo
    sudo -E miaou-bash "$MIAOU_BASH_DIR"/lib/initiate.bash
  fi
}

if [[ -f /var/lib/miaou-bash/semver_current ]]; then
  upgrade
fi