Adding the twostep container action from CDCgov/cfa-actions

[gvegayon]

It replaces the container workflow with the action from https://github.com/CDCgov/cfa-actions/.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 13.04%. Comparing base (c615c45) to head (4f2198e).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #245   +/-   ##
=======================================
  Coverage   13.04%   13.04%           
=======================================
  Files           9        9           
  Lines         820      820           
=======================================
  Hits          107      107           
  Misses        713      713           

Flag	Coverage Δ
python-tests	1.91% <ø> (ø)
r-tests	22.02% <ø> (ø)

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[damonbayer]

I am actually in the middle of modifying the actions here: #242

Would I be able to achieve my goal with the CFA actions?

[gvegayon]

Build args are currently hard-coded in the action, but adding that as an option would be awesome. I don't think it will be hard to do. I will add the feature and ping you when it's ready. I can start now.