chore: use corepack to install pnpm

[mmorel-35]

📑 Summary

Uses corepack to install pnpm in Dockerfile
Defines a workflow to validate Dockerfile

Closes #5754
Closes #5755

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 5.21%. Comparing base (4b195d1) to head (ed352de).
Report is 3 commits behind head on develop.

Additional details and impacted files

@@           Coverage Diff           @@
##           develop   #5763   +/-   ##
=======================================
  Coverage     5.20%   5.21%           
=======================================
  Files          323     322    -1     
  Lines        46105   46094   -11     
  Branches       536     561   +25     
=======================================
  Hits          2402    2402           
+ Misses       43703   43692   -11     

Flag	Coverage Δ
unit	5.21% <ø> (+<0.01%)	⬆️

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see 1 file with indirect coverage changes

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Build	Status	Details	Updated (UTC)
default (Inspect)	✅ No changes detected	-	Aug 24, 2024, 9:44 PM

[mmorel-35]

Hi @kairi003,

Would like to have a look as this shall cover the issue you raised ?