def build(self, client, pull=False, usecache=True):
        """
         Note:
            `pull` and `usecache` are for compatibility only. They're irrelevant because
            hey were applied when BUILDING self.sourceimage
        """
        stage = staging.StagedFile(self.sourceimage, self.sourcepath, self.destpath,
                                   cache_from=self.cache_from)
        stage.stage(self.baseimage, self.buildname)
Note:
            `pull` and `usecache` are for compatibility only. They're irrelevant because
            hey were applied when BUILDING self.sourceimage