How to properly assign DOCKER_PATH while performing build customed onnx runtime for Android

[JerichoHub]

Refer to the android section of this article : https://onnxruntime.ai/docs/build/custom.html#android

using the script of
python3 tools/android_custom_build/build_custom_android_package.py
--onnxruntime_branch_or_tag v
--include_ops_by_config /path/to/ops.config
--build_settings /path/to/build_settings.json
/path/to/working/dir

however, always get the error "FileNotFoundError: [Errno 2] No such file or directory: 'DOCKER_PATH' ", the tag of V1.12.1 is what's using from the repo, it seems there isn't a proper way to assign docker_path, not mentioned on the article, do you guys know how to assign it ?