Exclude RAT from Dockerfile build

[malaskowski]

Description

Building project with multi-stage Docker build should not check licenses.

Motivation and Context

Rat failed builds when project was customized.

Types of changes

• [x] Bug fix (non-breaking change which fixes an issue) labeled with bug
• [ ] New feature (non-breaking change which adds functionality) labeled with enhancement
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)

Checklist:

• [x] My code follows the code standards of this project.
• [x] My change requires updating the documentation. I have updated the documentation accordingly.

[github-actions[bot]]

✅ Visual tests status

No visual changes detected.

Name	Link
Commit	648188ae66749360ef52e7c0655d3f417c4e9392
Logs	https://github.com/websight-io/starter/actions/runs/6743091688