Feature/lab10 Tatyana Shmykova

[lime413]

Goal

Submit Lab 10 for the DevOps course by adding automated container release to GHCR, deploying QuickNotes to Hugging Face Spaces, and documenting the optional Cloudflare Tunnel comparison.

Changes

• Added .github/workflows/release.yml to build and publish ghcr.io/lime413/devops-intro/quicknotes on signed tag pushes matching v*
• Restored .github/workflows/ci.yml in this branch so Lab 10 keeps the expected Lab 3 CI base
• Added cloud/ artifacts for deployment:
  • Hugging Face Space Dockerfile
  • Hugging Face Space README.md with required YAML frontmatter
  • teardown.md
• Updated compose.yaml to keep only the QuickNotes container path needed for Lab 10 and removed Lab 8-only monitoring services
• Removed Lab 8-only assets from this branch:
  • submissions/lab8.md
  • unused Lab 8 screenshots
  • monitoring and runbook files
• Added submissions/lab10.md with:
  • GitHub Actions release evidence
  • GHCR package URL and clean pull output
  • Hugging Face deployment evidence for /health and /notes
  • warm latency samples and p50
  • three cold samples
  • manual pause/restart measurements after checking current HF sleep behavior
  • official Hugging Face documentation links showing free cpu-basic Spaces sleep after 48 hours of inactivity
  • bonus Cloudflare Tunnel benchmark and external-network verification
  • embedded screenshots

Testing

• Ran go test ./... in app/
• Validated GitHub workflow YAML locally
• Built the Lab 6/Lab 10 container locally with Docker
• Verified the Hugging Face wrapper image locally with /health
• Published and pulled:
  • ghcr.io/lime413/devops-intro/quicknotes:v0.1.0
  • ghcr.io/lime413/devops-intro/quicknotes:latest
• Verified Hugging Face Space endpoints:
  • https://lime413-quicknotes.hf.space/health
  • https://lime413-quicknotes.hf.space/notes
• Measured Hugging Face warm latency and documented cold/pause-restart checks
• Verified Cloudflare quick tunnel locally and from a different network
• Measured Cloudflare tunnel warm latency with hyperfine

Checklist

• Title is a clear sentence (<= 70 chars)
• Commits are signed (git log --show-signature)
• submissions/labN.md updated