class_docstr: Test case of valid towhee command
docstr: target: command 'package'
  method: pack a folder and checkout the generated file
  expected: pack successfully
code: def test_command_package(self):
      """
      target: command 'package'
      method: pack a folder and checkout the generated file
      expected: pack successfully
      """
      if os.path.exists("/home/super/mpvit"):
          os.system("rm -rf mpvit")
      res = os.system(
          "git clone https://towhee.io/image-embedding/mpvit.git"
      )
      if res != 0:
          return False
      else:
          os.system(
              "cd /home/super/mpvit && towhee package -n towhee -p mpvit"
          )
          if os.path.exists("/home/super/mpvit/dist"):
              os.system("rm -rf /home/super/mpvit")
              return True
          else:
              return False
  
file_path: towhee/tests/testcases/test_command.py
imports: import os
  import sys
  import towhee
label_desc: Use image node_id 3 for calling the TestCommandValid obj's underlying member method code with example usage: obj.test_command_package() and returns: False, True, False