chore: Improve unit tests with built-in containers support

[alex-karpenko]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 92.49564% with 43 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
src/lib.rs	60.56%	28 Missing ⚠️
src/bin/git-events-runner.rs	0.00%	6 Missing ⚠️
src/tests/containers/k3s.rs	92.00%	6 Missing ⚠️
src/bin/gitrepo-cloner.rs	0.00%	3 Missing ⚠️

Files with missing lines	Coverage Δ
src/cache.rs	66.66% <100.00%> (-0.12%)	⬇️
src/cli.rs	87.33% <100.00%> (+3.14%)	⬆️
src/config.rs	92.53% <100.00%> (-0.04%)	⬇️
src/controller.rs	47.50% <100.00%> (+1.35%)	⬆️
src/resources/action.rs	99.66% <100.00%> (-0.01%)	⬇️
src/resources/git_repo.rs	91.56% <100.00%> (+91.56%)	⬆️
src/resources/mod.rs	89.28% <100.00%> (+5.95%)	⬆️
src/resources/trigger.rs	80.19% <100.00%> (+0.04%)	⬆️
src/tests/containers.rs	100.00% <100.00%> (ø)
src/tests/containers/gitea.rs	100.00% <100.00%> (ø)
... and 5 more