code: def get_dockerfile(cuda_version: str) -> Path:
      if cuda_version == "11.3":
          file_name = "DockerfileCuda113"
      elif cuda_version == "11.4":
          file_name = "DockerfileCuda114"
      elif cuda_version == "11.6":
          file_name = "DockerfileCuda116"
      elif cuda_version == "11.7":
          file_name = "DockerfileCuda117"
      elif cuda_version == "117dev":
          # for QA to test towhee
          file_name = "DockerfileCuda117dev"
      else:
          logger.error(
              "Towhee serve doesn't support cuda %s, the support cuda: 11.3, 11.4, 11.6, 11.7",
              cuda_version,
          )
          return None
      return Path(__file__).absolute().parent / file_name
  
label_desc: Use image node_id 1 for calling a global function with example usage: get_dockerfile(cuda_version) and returns: unknown, None