Prefer docker over podman in CI

[jotak]

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[codecov]

Codecov Report

Merging #345 (c66e53d) into main (49c4ade) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #345   +/-   ##
=======================================
  Coverage   51.42%   51.42%           
=======================================
  Files          43       43           
  Lines        5186     5186           
=======================================
  Hits         2667     2667           
  Misses       2323     2323           
  Partials      196      196           

Flag	Coverage Δ
unittests	51.42% <ø> (ø)

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