code: def tag(self):
      self.full_image_name = self.image_name
  
imports: import os
  import json
  import subprocess
  from pathlib import Path
  import click
  import fiber
  import fiber.core
  from fiber.core import ProcessStatus
label_desc: Use image node_id 4 for calling the DockerImageBuilder obj's underlying member method code with example usage: obj.tag() without return types