File _link of Package derived-docker

<link project="openSUSE:Templates:Images:Tumbleweed" package="openSUSE-Tumbleweed-Container" rev="b0ca398581268e070fbe1a87d471646a" baserev="b0ca398581268e070fbe1a87d471646a">
  <patches>
    <branch/>
  </patches>
</link>