Where is 'environment.yml'?

In Getting started with Gluon

Windows

  1. Create and activate the environment using Conda. For convenience we created an environment.yml file to hold all configuration.

How to get environment.yml file?

thank you in advance.

warmest regadrs,
suryadi

notebook package:
http://diveintodeeplearning.org.s3-website-us-west-2.amazonaws.com/d2l-en.zip

I haven’t been able to solve this problem for hours.
“Environment.yml” is missing in the zip file of the URL.
I found the answer here.
thank you very much.