code: func (b Build) MarshalYAML() (interface{}, error) {
  	m := map[string]interface{}{}
  	if b.Context != "" {
  		m["context"] = b.Context
  	}
  	if b.Dockerfile != "" {
  		m["dockerfile"] = b.Dockerfile
  	}
  	if len(b.Args) > 0 {
  		m["args"] = b.Args
  	}
  	if len(b.CacheFrom) > 0 {
  		m["cache_from"] = b.CacheFrom
  	}
  	if len(b.Labels) > 0 {
  		m["labels"] = b.Labels
  	}
  	if b.Target != "" {
  		m["target"] = b.Target
  	}
  	if b.Network != "" {
  		m["network"] = b.Network
  	}
  	return m, nil
  }
docs: // MarshalYAML implements the Marshaller interface.