anchor.diff:  
   [docker-ce-stable-source]
   name=Docker CE Stable - Sources
  -baseurl=https://download.docker.com/linux/centos/7/source/stable
  +baseurl=https://download.docker.com/linux/centos/$releasever/source/stable
   <% if @source -%>
   enabled=1
   <% else -%>
  
positive.code: 
  [docker-ce-stable-debuginfo]
  name=Docker CE Stable - Debuginfo $basearch
  baseurl=https://download.docker.com/linux/centos/7/debug-$basearch/stable
  <% if @debuginfo -%>
  enabled=1
  <% else -%>
  
negative.code: [docker-ce-stable]
  name=Docker CE Stable - $basearch
  baseurl=https://download.docker.com/linux/centos/$releasever/$basearch/stable
  enabled=1
  gpgcheck=1
  gpgkey=https://download.docker.com/linux/centos/gpg
  