Draft: add docker lint

[rreinoldsc]

Added docker lint, and addressed the following:

-:1 DL3029 warning: Do not use --platform flag with FROM
-:9 DL3013 warning: Pin versions in pip. Instead of `pip install <package>` use `pip install <package>==<version>` or `pip install --requirement <requirements file>`
-:9 DL3042 warning: Avoid use of cache directory with pip. Use `pip install --no-cache-dir <package>`

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