Add Bun smoke test to CI

[cristianrgreco]

Summary

Adds a Smoke tests (Bun) CI job that runs the existing CommonJS and ES module smoke tests (start and stop an alpine container) under Bun 1.4.2 (the current latest release; pinned so Bun releases do not break unrelated PRs, to be bumped periodically).

The job mirrors the Node.js smoke test job: build testcontainers with Node.js, prune dev dependencies, then run packages/testcontainers/smoke-test.js and packages/testcontainers/smoke-test.mjs with bun. Like the Node.js smoke tests, it only runs when the testcontainers package changes, and the Checks complete job depends on it.

This replaces the full Bun test matrix proposed in #1433 with a lightweight compatibility signal.

Verification

• npm run format
• npm run lint
• Parsed .github/workflows/checks.yml and confirmed the new job and end dependencies
• Locally with Bun 1.4.2 against Docker, after npm run build and npm prune --omit=dev --workspace packages/testcontainers:
  • bun packages/testcontainers/smoke-test.js: exit 0
  • bun packages/testcontainers/smoke-test.mjs: exit 0
  • The first run started a fresh Ryuk container, and both processes exited without hanging

Compatibility

Not breaking: CI-only change. No published package code or public API changes.

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ℹ️ Recent review info

⚙️ Run configuration

• Configuration used: Repository UI
• Review profile: CHILL
• Plan: Advanced
• Run ID: 5b2401a6-e9df-4255-b18c-64dc49a016da

📥 Commits

Reviewing files that changed from the base of the PR and between f73de97 and 3129b42.

📒 Files selected for processing (1)

• .github/workflows/checks.yml

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📝 Walkthrough

Walkthrough

The checks workflow adds a Bun smoke-test job when the testcontainers module is detected. The job builds and prunes the workspace, installs Bun 1.4.2, and runs CommonJS and ES module smoke tests with DEBUG enabled. The end job now waits for the smoke-test job.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to 3129b

The Bun smoke-test job adds CI coverage without an identified merge-blocking risk. Merge after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: adding a Bun smoke test to CI.
Description check	✅ Passed	The description explains the Bun CI job, its smoke tests, when it runs, and the reported verification. It is directly related to the changeset.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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