Container-based GH actions

[ischoegl]

Changes proposed in this pull request

• Add CI tests running on official ubuntu docker images
• ~Currently added to main.yaml to facilitate review; should be moved to post-merge-tests.yaml before merging~
• ~Move mingw runner to post-merge-tests~
• Remove vestigial h5py references

If applicable, provide an example illustrating new features this pull request is introducing

Checklist

• [x] The pull request includes a clear description of this code change
• [x] Commit messages have short titles and reference relevant issues
• [x] Build passes (scons build & scons test) and unit tests address code coverage
• [x] Style & formatting of contributed code follows contributing guidelines
• [x] The pull request is ready for review

[codecov[bot]]

Codecov Report

Merging #1608 (675e90e) into main (e2c446c) will decrease coverage by 0.02%. The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #1608      +/-   ##
==========================================
- Coverage   72.66%   72.65%   -0.02%     
==========================================
  Files         370      370              
  Lines       56259    56255       -4     
  Branches    20353    20353              
==========================================
- Hits        40882    40873       -9     
- Misses      12374    12379       +5     
  Partials     3003     3003              

Files Changed	Coverage Δ
interfaces/cython/cantera/_utils.pyx	91.92% <ø> (+0.51%)	:arrow_up:
interfaces/cython/cantera/onedim.py	84.97% <ø> (ø)

... and 1 file with indirect coverage changes

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[ischoegl]

~As mentioned on top, the new runner should be moved before merging. It is currently in main.yaml so the CI is actually triggered and output can be reviewed.~ Edit: now moved to final location.

[ischoegl]

I moved the docker tests to post-merge-tests to expedite things. Fwiw, the output of the CI run can be reviewed in previously successful GH Action runs, i.e.:

• https://github.com/Cantera/cantera/actions/runs/5994969657/job/16257310506, and
• https://github.com/Cantera/cantera/actions/runs/5994969657/job/16257310399

[ischoegl]

@speth ... thanks for the feedback! No problem with leaving mingw where it was. Other than that, I believe we have a decent template to be used for regression tests with other Linux flavors in the future.