feat(migration): GKE deployment artifacts for atlas-prod [run-20260620-032937]

[sanjoy1234]

Migration PR — terotuomala/k8s-express-api-example → GKE atlas-prod

run_id: run-20260620-032937
Generated by: migration-harness (implement_migration phase)
Status: Pending manual approval before deploy

Summary

• Dockerfile.api: multi-stage Node.js 20 alpine production build with non-root user (UID 1001)
• Helm chart: k8s-express-api — deployment, service, ingress, HPA (minReplicas=1, maxReplicas=3), PDB (minAvailable=1), network policies (ingress + egress)
• Migration plan: 6 phases, 4-day total effort
• Risk register: 7 risks (R-H1 Redis 70%, R-H2 missing env 85%, 3M, 2L)

Build Evidence

Artifact	Status
Dockerfile.api	✓ PASS — multi-stage node:20-alpine
Helm lint	✓ PASS — 0 failures, 0 chart failures
Docker build	✓ PASS — sha256:0100cfd82800c4723d3e85c5fda40a361c088353fe774985f2108d74b4ef79aa
Image push	✓ PASS — us-central1-docker.pkg.dev/scotiapoc-migration-demo/migration-demo/k8s-express-api:run-20260620
npm audit	⚠️ 3 vulnerabilities (1 moderate, 2 high) — remediation required before prod

Blocking Prerequisites (must resolve before deploy)

• GITHUB_API_URL injected via k8s-express-api-secret (no default)
• REDIS_DEFAULT_EXPIRATION injected via k8s-express-api-secret (no default)
• Redis StatefulSet provisioned in atlas-prod namespace
• npm audit vulnerabilities resolved or risk-accepted

Review Checklist

• Dockerfile security review (non-root user, minimal image)
• Helm values reviewed for atlas-prod resource limits
• Network policy egress permits GitHub API (port 443)
• Secret manifest verified for all required keys
• Manual approval given for deploy to atlas-prod environment

🤖 Generated by migration-harness · run_id: run-20260620-032937