Ravindra BagaleCourses & study guides

Chapter 8: CI/CD Concepts

8.2 Pipeline stages — lint → test → build → push → deploy

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A typical beginner-friendly path for an API image:

  commit / PR
       │
       ▼
    lint / format check ← fail fast, cheap
       │
       ▼
    unit / integration tests
       │
       ▼
    build artifact (container image / zip)
       │
       ▼
    push to registry (GHCR / Docker Hub…)
       │
       ▼
    deploy to staging
       │
       ▼
    (optional) manual approval
       │
       ▼
    deploy to production
Stage Question it answers
Lint Is the code style / basic static check OK?
Test Do automated checks pass?
Build Can we produce a runnable artifact?
Push Is the artifact stored with a clear tag?
Deploy Is that exact artifact running in an environment?

Tiny example. Developer opens a PR that adds GET /health. CI runs lint + tests. On merge to main, CI builds badge-api:a3f2c1 and pushes it. Staging pulls that tag. After a smoke check, production pulls the same tag.

Ravindra Bagale's Tip

Khup students staging var latest aani prod var dusra mystery build use kartat. Same git SHA / image tag promote kara — "works in staging" tar tohach bit promote. Dhyan rakho!