anchor.diff:  
   ====
   ----
  -{
  -  "spec" : {
  -    "completionDeadlineSeconds" : 1800,
  -  }
  -}
  +spec:
  +  completionDeadlineSeconds: 1800
   ----
   ====
   
  
positive.code: create a `*BuildConfig*` with the `*forcePull*` flag set to *true*:
  
  ====
  
  [source,json]
  ----
  {
    "strategy": {
      "type": "Docker",
      "dockerStrategy": {
        "forcePull": true <1>
      }
    }
  }
  ----
  
  <1> This flag causes the local builder image to be ignored, and a fresh version
  to be pulled from the registry to which the image stream points. Setting
  `*forcePull*` to *false* results in the default behavior of honoring the image
  
negative.code: specify a `*secret*`, which will be part of the URL you supply to GitHub when
  configuring the webhook. The secret ensures the uniqueness of the URL, preventing
  others from triggering the build. The following example is a trigger definition
  YAML within the `*BuildConfig*`:
  
  ====
  [source,yaml]
  ----
  type: "GitHub"
  github:
    secret: "secret101"
  ----
  ====
  
  