use packaging test images and not install things during CI

[thanodnl]

speedup CI by installing everything in the images, not during runtime

[codecov[bot]]

Codecov Report

Merging #7337 (a357023) into main (57ff762) will increase coverage by 0.00%. Report is 1 commits behind head on main. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #7337   +/-   ##
=======================================
  Coverage   89.57%   89.57%           
=======================================
  Files         275      275           
  Lines       59585    59610   +25     
  Branches     7427     7427           
=======================================
+ Hits        53373    53398   +25     
- Misses       4079     4081    +2     
+ Partials     2133     2131    -2