chore: Remove testcontainer example

[thomaspoignant]

Description

Remove testcontainer example

Checklist

• [x] I have tested this code
• [x] I have added unit test to cover this code
• [ ] I have updated the documentation (README.md and /website/docs)
• [x] I have followed the contributing guide

[netlify[bot]]

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[sonarcloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Please upload report for BASE (main@72eb917). Learn more about missing BASE report. Report is 1 commits behind head on main.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #2605 +/- ## ======================================= Coverage ? 85.48% ======================================= Files ? 100 Lines ? 4444 Branches ? 0 ======================================= Hits ? 3799 Misses ? 516 Partials ? 129 ```

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