How to use insightface to crop my own image please?

My work needs to crop the face chip from my own img dataset. I just need to crop and align the face from the image, no matter who is he/she/it.

I have use dlib library before but it cannot align the face cropped(may be I didnt find it). And I find the example img in this project, the people in "Friends" img are all cropped and aligned. How to detect and crop the face with insightface please? Is the .py is what I need https://github.com/deepinsight/insightface/blob/master/recognition/arcface_torch/inference.py? How to use please? Thanks.