nic-ci-pipelines

name	nic-ci-pipelines
description	CI/CD pipeline structure, GitHub Actions workflows, reusable workflow patterns, and matrix builds for NIC. Use when working on CI workflows, debugging build failures, adding new workflow steps, modifying build matrices, or understanding the release pipeline.

NIC CI/CD Pipelines

Workflow Architecture

The CI system uses GitHub Actions with extensive reusable workflow composition.

ci.yml (main CI orchestrator)
  -> checks (format, lint, codegen, CRDs, chart version)
  -> unit-tests
  -> build-artifacts.yml (reusable)
       -> build-oss.yml (per-variant, matrix)
       -> build-plus.yml (per-variant, matrix)  <- also used for NAP variants
  -> helm-tests
  -> setup-smoke.yml (reusable)
  -> e2e tests

image-promotion.yml (post-merge)
  -> builds images, tags edge/stable
  -> Trivy + DockerScout security scans
  -> publishes edge Helm charts

release.yml (manual dispatch)
  -> oss-release.yml
  -> plus-release.yml
  -> publish-helm.yml
  -> certify-ubi-image.yml
  -> marketplace pushes (AWS, Azure, GCP)

---

Key Workflows

Workflow	Trigger	Purpose
ci.yml	PR to main/release-*, merge_group, workflow_dispatch	Main CI: checks + build + test
lint-format.yml	PR to main, merge_group	goimports, gofumpt, golangci-lint, actionlint
regression.yml	Daily cron (03:00 UTC), manual	Multi-K8s-version regression
image-promotion.yml	Push to main/release-*	Post-merge image tagging + scanning
release.yml	Manual dispatch	Full release orchestrator
build-base-images.yml	Weekday cron (04:30 UTC)	Rebuilds all base images

Release Sub-Workflows (called by release.yml)

Workflow	Purpose
oss-release.yml	OSS image release
plus-release.yml	Plus/NAP image release
publish-helm.yml	Helm chart publishing to registry

Reusable Build Workflows (called via workflow_call)

Workflow	Purpose
build-artifacts.yml	Orchestrates GoReleaser binary builds + image matrix
build-oss.yml	Builds single OSS image variant
build-plus.yml	Builds single Plus/NAP image variant
build-test-image.yml	Builds Python e2e test image
setup-smoke.yml	Sets up and runs smoke tests
patch-image.yml	OS-level patches on existing images
retag-images.yml	Re-tags images in GCR Dev Registry

Security & Compliance

Workflow	Purpose
codeql-analysis.yml	GitHub CodeQL scanning
scorecards.yml	OpenSSF Scorecards
dependency-review.yml	Dependency review for PRs
mend.yml	Mend (WhiteSource) software composition analysis
certify-ubi-image.yml	Red Hat UBI certification for OpenShift

---

CI Patterns

Matrix Builds

Image variants are defined in JSON under .github/data/:

• matrix-images-oss.json: debian, alpine, ubi (amd64 + arm64)
• matrix-images-plus.json: debian-plus, alpine-plus, alpine-plus-fips, ubi-10-plus
• matrix-images-nap.json: WAF v4/v5, DoS, UBI 10 (amd64 only)
• matrix-smoke-oss.json, matrix-smoke-plus.json, matrix-smoke-nap.json: Smoke test matrices
• matrix-regression.json: Regression test matrix (K8s version combinations)
• patch-images.json: Patch image definitions for patch-image.yml

Caching Strategy

• Go binaries: cached by go_code_md5 hash
• Docker images: cached by docker_md5 hash
• Stable images in GCR are checked before rebuilding

Fork Awareness

forked_workflow variable gates authenticated operations. Forked PRs get local-only builds without secret access.

Concurrency

Each workflow uses group: ${{ github.ref_name }}-<suffix> with cancel-in-progress: true.

Secrets

Retrieved from Azure Key Vault via OIDC -- not stored as GitHub secrets directly.

Version Source of Truth

.github/data/version.txt contains IC_VERSION and HELM_CHART_VERSION.

---

Gotchas

• Never add secrets as GitHub repository secrets -- use Azure Key Vault OIDC flow
• Always pin GitHub Actions to immutable SHA hashes, not mutable tags
• Matrix JSON files in .github/data/ must stay in sync with Makefile image targets
• NAP variants are linux/amd64 only -- do not add arm64 to NAP matrices
• Renovate manages tool versions via # renovate: comments -- do not update manually
• image-promotion.yml runs on merge to main, not on PR -- don't expect images from PRs