Create a shell script to improve the Docker entrypoint

[ameliav]

💡 Summary

Create a shell script to improve entrypoints

Motivation and context

Write a shell script that outputs the --help options for each of the three commands in pca-report-library and shows how to run each one via Docker

Implementation notes

Current entrypoint shows the pca-report-generator help message only. With this improvement, it would show pca-report-compiler and pca-report-templates help messages as well.

Acceptance criteria

How do we know when this work is done?

• Output shows the three help options
• All code working otherwise