anchor.diff:          "name": "dockerhub"
          },
       },
  -    "type": "STI"
  +    "type": "Source"
     }
   }
   ----
  
positive.code: 
  Supply the `.dockercfg` file with valid Docker Registry credentials in order to push the output image into a private Docker Registry or pull the
  builder image from the private Docker Registry that requires authentication.
  
  The *_.dockercfg_* JSON file exists in your home directory by default and has
  following format:
  
negative.code: ----
  {
    "strategy": {
      "sourceStrategy": {
        "from": {
          "kind": "DockerImage",
          "name": "docker.io/user/private_repository"
  