Keep the Docker Fresh

[jarednorman]

Summary

Follow-up to #6533: let's try to make sure the Docker setup stays functional for anyone using it. This adds a workflow that builds the dev image and runs a full bundle inside the container.

Checklist

Check out our PR guidelines for more details.

The following are mandatory for all PRs:

• I agree that my PR will be published under the same license as Solidus.
• I have written a thorough PR description.
• I have kept my commits small and atomic.
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• I have used clear, explanatory commit messages.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.14%. Comparing base (ada9c41) to head (8b8fd24).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6534   +/-   ##
=======================================
  Coverage   92.14%   92.14%           
=======================================
  Files        1035     1035           
  Lines       21151    21151           
=======================================
  Hits        19490    19490           
  Misses       1661     1661           

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[tvdeyen]

Nice!