post_install() {
  grep -qs ^minbif: /etc/group || groupadd -g 67 minbif
  grep -qs ^minbif: /etc/passwd || useradd -u 67 -g minbif \
    -d /var/lib/minbif -s /bin/false minbif
}

post_upgrade() {
  post_install $1
}
