File _service of Package rmt-server-image

<services>
  <service mode="buildtime" name="docker_label_helper"/>
  <service mode="buildtime" name="kiwi_metainfo_helper"/>
  <service name="replace_using_package_version" mode="buildtime">
    <param name="file">Dockerfile</param>
    <param name="regex">%%rmt_version%%</param>
    <param name="package">rmt-server</param>
    <param name="parse-version">minor</param>
  </service>
</services>