Lowkey Vault Docker does not support dynamic host ports

[nagyesta]

Issue: #1319

Description

• Adds new configuration option to allow relaxed matching of vault URI ports
• Updates tests
• Deprecates Testcontainers method setting a fixed host port
• Enhances Testcontainers module to always use the relaxed matching feature
• Adds more verification steps to Testcontainers tests
• Updates documentation

Entry point

Checklists

• I have rebased my branch
• My commit message is meaningful
• The commit messages use semantic versioning: {major}, {minor} or {patch}
• The changes are focusing on the issue at hand
• I have maintained or increased test coverage

Notes

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.89%. Comparing base (3155588) to head (e45fab1).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1320   +/-   ##
=========================================
  Coverage     98.89%   98.89%           
- Complexity     2032     2034    +2     
=========================================
  Files           239      239           
  Lines          4965     4976   +11     
  Branches        196      197    +1     
=========================================
+ Hits           4910     4921   +11     
  Misses           42       42           
  Partials         13       13           

Flag	Coverage Δ
app	99.37% <100.00%> (+<0.01%)	⬆️
client	94.00% <ø> (ø)
testcontainers	96.05% <100.00%> (+0.01%)	⬆️

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