retain build files

[johnml1135]

Fix for #468

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This change is 

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 77.77778% with 2 lines in your changes missing coverage. Please review.

Project coverage is 56.59%. Comparing base (c7f1214) to head (e6a2277).

Files with missing lines	Patch %	Lines
...val.Machine.Shared/Services/PostprocessBuildJob.cs	33.33%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #481   +/-   ##
=======================================
  Coverage   56.59%   56.59%           
=======================================
  Files         275      275           
  Lines       14174    14179    +5     
  Branches     1908     1909    +1     
=======================================
+ Hits         8022     8025    +3     
- Misses       5563     5564    +1     
- Partials      589      590    +1     

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[ddaspit]

It doesn't need to happen in this PR, but we need to come up with a strategy for cleaning these files up after a specified amount of time. It would be good to know if there are any other changes, such as model changes, that are needed to support the cleanup strategy.

Reviewed 5 of 5 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @johnml1135)

[ddaspit]

I didn't approve this PR. I was waiting on a response about the strategy for cleaning up the files.

Reviewable status: complete! all files reviewed, all discussions resolved