message: Add a comment why JSON.parse and JSON.stringify are called.
diff: @@ -448,6 +448,9 @@ export class Builder {
  }
  })
  }
  + /**
  + * Use JSON.parse and JSON.stringify for a deep copy.
  + */
  steps = JSON.parse(JSON.stringify(steps))
  const docker = configuration.get('docker.enabled')
  