Make the local-minimal version runnable again

[kwang2049]

What does this PR do?

It seems that some new lines have been added and the current local minimal version cannot run successfully. This PR fixes the issue.

Changes:

• Traefik port 8080->8081: 8080 is very likely to be in use already;
• Commented out BERT-ONNX-worker: Some file is missing. One can add it back when the file is provided;
• Corrected comment format in the yaml file: # -> #!;
• Generate .env file for model manager.

Before submitting / marking as 'ready to review'

• This PR fixes a typo or improves the docs (you can dismiss the other checks if that's the case).
• Did you make sure to update the documentation with your changes?
• Did you write any new necessary tests?

Who can review?

Feel free to tag members/contributors who may be interested in your PR.

[kwang2049]

@Rachneet a file is missing:

square-core/docker-compose.ytt.min.yaml

Line 218 in 49ef708

dockerfile: ./dockerfiles/onnx/Dockerfile

[kwang2049]

Does anybody know how to add CI tests for this minimal version? @timbmg @Rachneet We can then make it easier for maintaining