File _service of Package docker

<services>
  <service name="obs_scm">
    <param name="url">https://github.com/likan999/ppa-docker.git</param>
    <param name="scm">git</param>
    <param name="revision">ppa</param>
    <param name="exclude">.git</param>
    <param name="extract">SPECS/docker.spec</param>
    <param name="extract">SOURCES/*</param>
  </service>
  <service name="download_files" />
  <service name="tar" mode="buildtime" />
  <service name="recompress" mode="buildtime">
    <param name="file">*.tar</param>
    <param name="compression">xz</param>
  </service>
</services>