code: func (d *stiDocker) GetAssembleRuntimeUser(image string) (string, error) {
  	imageMetadata, err := d.CheckAndPullImage(image)
  	if err != nil {
  		return "", err
  	}
  	return getLabel(imageMetadata, constants.AssembleRuntimeUserLabel), nil
  }
docs: // GetAssembleRuntimeUser finds a io.openshift.s2i.assemble-runtime-user label on the given image.