Dockerfile dependency missing

[ChiuJun]

python or python3 are required when executed command RUN yarn build.

Description

Dependency missing，it reports something like Error: not found: python when I try to buid it with Docker in my pc.

Motivation and Context

No issue.

How Has This Been Tested?

Just add a required dependecy and it work with my x64 pc which is run on Windows10.
I can't remember more detail about my pc.

Screenshots (if appropriate):

No Screenshots.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have added tests to cover my changes.
• All new and existing tests passed.