File _service of Package discord-canary

<services>
  <service name="download_url">
    <param name="host">canary.discord.com</param>
    <param name="protocol">https</param>
    <param name="path">/api/download/canary?platform=linux&amp;format=tar.gz</param>
    <param name="filename">discord-canary.tar.gz</param>
  </service>
  <service name="extract_file">
    <param name="archive">_service:download_url:discord-canary.tar.gz</param>
    <param name="files">*/resources/build_info.json</param>
    <param name="outfilename">build_info.json</param>
  </service>
  <service name="set_version">
    <param name="fromfile">_service:extract_file:build_info.json</param>
    <param name="regex">^\s+"version":\s"(\d+\.\d+\.\d+)"$</param>
  </service>
</services>