ci: remove stale docker-build PR status workflows

[svvarom]

What changed

This removes the old docker-build PR status path:

• the small PR trigger workflow
• the workflow that posted the commit status and handed the work off outside this repo
• the liveness workflow that marked stuck statuses as failed

Why

That status used to stand in for Docker build coverage that was not directly visible in this repo. That is no longer the right tradeoff.

The missing container build coverage now runs in this repo's own CI after #423, and the old commit status was hard to act on when it failed or timed out. Contributors could see that docker-build failed, but the status did not give them a useful repo-local job to inspect or rerun.

This keeps the PR check surface simpler: Docker build signal comes from visible CI jobs, not a separate commit status with poor diagnostics.

Validation

• actionlint .github/workflows/*.yaml .github/workflows/*.yml
• git diff --check HEAD~1..HEAD
• rg -n "docker-build|DOCKER_BUILD_TIMEOUT_MIN|Commit statuses" .github docs release scripts tests packages services pyproject.toml README.md

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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📥 Commits

Reviewing files that changed from the base of the PR and between 89214a3 and fa30b70.

📒 Files selected for processing (3)

• .github/workflows/docker-build-dispatch.yml
• .github/workflows/docker-build-liveness.yml
• .github/workflows/docker-build-trigger.yml

💤 Files with no reviewable changes (3)

• .github/workflows/docker-build-trigger.yml
• .github/workflows/docker-build-dispatch.yml
• .github/workflows/docker-build-liveness.yml

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📝 Walkthrough

Walkthrough

Removes three GitHub Actions workflows: docker-build-trigger (fired on PR events), docker-build-dispatch (posted docker-build pending status and triggered downstream docker-pr-build dispatch), and docker-build-liveness (cron job that failed stale pending statuses after a timeout).

Changes

Docker Build Workflow Removal

Layer / File(s)	Summary
Remove Docker build trigger, dispatch, and liveness workflows .github/workflows/docker-build-trigger.yml, .github/workflows/docker-build-dispatch.yml, .github/workflows/docker-build-liveness.yml	Deletes all three workflows that handled PR-triggered Docker build status signaling, downstream repo dispatch, and pending-status timeout enforcement.

Possibly related PRs

• NVIDIA-NeMo/nemo-platform#200: Introduced the exact three workflows being removed here.
• NVIDIA-NeMo/nemo-platform#345: Added CI jobs dependent on Docker build and dispatch logic that this PR removes.

Suggested labels

ci

Suggested reviewers

• mquong-ca

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title 'ci: remove docker-build status workflows' directly describes the main change—deletion of three Docker build-related workflow files.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch remove-docker-build-status/smuley

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_{Comment @coderabbitai help to get the list of available commands.}

[github-actions]

Suite	Lines Covered	Line Rate	Branch Rate
Unit Tests	20908/27474	76.1%	61.2%
Integration Tests	12109/26243	46.1%	19.5%

[crookedstorm]

LGTM