Couryrr/updating dockerfile for testing

[couryrr-afs]

• Restructured install to run the needed test install per working group meeting.
• Removed compile script copy and run in favor or the above (no need to duplicate)
• Adjusted run-test to install pytest and use correct directory.
• Removed modified test. This can be update in everest-core properly.

This resolves #30 but there appears to be a system level change that does not allow the everest manager to run on non-linux OS. Please see EVerest/everest-framework#180. The investigation is still on-going.

[shankari]

Pulled from main to get the changes in the past few months and to build against the stable release.

[shankari]

@couryrr-afs merged; please submit another PR to bump up the .env file after testing