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gem-devops-guidelines

Design and review infrastructure and release workflows with checks tailored to the environment. Covers automated build and deployment pipelines, containers, health checks, rollback plans, feature flags, and mobile releases to help assess readiness before deployment.

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Design or review infrastructure, deployment, CI/CD, Docker, Kubernetes, health checks, rollback, feature flags, production readiness, and mobile release workflows. Use for DevOps, platform, container, pipeline, or release tasks.

github/awesome-copilot
Works withVercelDockerKubernetes
See how to install

Good for

  • Reviewing deployment and rollback plans
  • Designing automated build and deployment pipelines
  • Checking Docker and Kubernetes configurations
  • Planning iOS and Android release workflows

Files included (1)

  • SKILL.md2.9 KB

SKILL.md (original)

Review the instructions the agent will receive before you install.

DevOps Guidelines

Apply only sections relevant to workload/provider/environment/acceptance criteria. Skip Docker, Kubernetes, mobile, production, rollback, health, feature-flag, security checks when not applicable.

Deployment strategy

  • Rolling (default): gradual, zero-downtime replacement.
  • Blue-green: duplicate environments, atomic cutover, instant rollback, 2× infra.
  • Canary: route small % first; requires traffic splitting.

Docker

  • Pin base-image tags (node:22-alpine); NEVER :latest.
  • Multi-stage builds + non-root user. Copy deps first for caching.
  • .dockerignore: node_modules, .git, tests. Define HEALTHCHECK + resource limits.

Kubernetes

Configure startup, readiness, liveness probes with workload-appropriate initial delays/thresholds.

CI/CD

  • PR: lint -> typecheck -> unit -> integration -> preview.
  • Main: build -> staging -> smoke -> production.

Health and shutdown

  • Simple: GET /health -> { "status": "ok" }.
  • Detailed: dependencies, uptime, version.
  • Services MUST expose meaningful health + gracefully handle SIGTERM when workload requires it.

Configuration

Use environment variables (Twelve-Factor), separated by environment. Validate at startup + fail fast. NEVER commit secrets or hard-code NODE_ENV=production.

Rollback

  • Kubernetes: kubectl rollout undo.
  • Vercel: vercel rollback.
  • Docker: redeploy previous pinned image.

Feature Flags

  • Lifecycle: create -> enable -> 5% -> 25% -> 50% -> 100% -> remove flag + dead code.
  • Every flag MUST have owner, expiration, rollback trigger. Remove within two weeks.

Checklists

  • Pre-deploy: passing tests, code review, env vars, migrations, rollback plan.
  • Post-deploy: healthy, monitored, old pods terminated, outcome documented.
  • Production: passing tests; no hardcoded secrets; JSON logs; meaningful health; pinned versions; validated env vars; resource limits; TLS; CVE scan; CORS; rate limiting; CSP/HSTS/X-Frame-Options; tested rollback; runbook; on-call.
  • Apply security/CVE checks to executable or security-sensitive workloads.

Mobile Deployment

  • EAS: eas build:configure; eas build -p ios|android --profile preview; eas update --branch production; --auto-submit.
  • Fastlane: iOS match/cert/sigh/pilot; Android Gradle/supply.
  • Credentials in env/secret storage, never Git. Automate iOS signing with fastlane match; use keytool + Google Play App Signing for Android.
  • TestFlight: internal instant; external 90 days/100 testers. Google Play: internal/beta/production. Expect 1–7 days review.
  • Rollback: EAS eas update:rollback; native release -> revert build; store release -> reduce phased rollout.

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