CI/CD for Web Projects

CI (Continuous Integration) means on every push or Pull Request you run automatically: install, build, lint, tests. So bad code doesn’t reach main without passing checks.

CD (Continuous Deployment) means after a successful build the code is uploaded automatically to a server or host (Vercel, Netlify, your own server). Deploy becomes predictable and less error-prone.

First steps with GitHub Actions

In the repo create .github/workflows/ci.yml. Define trigger (e.g. push and pull_request to main), a job with Node version, steps: checkout, npm ci, npm run build, npm run lint, npm test. On success you can add a deploy step (e.g. Vercel or SSH to server). GitHub Actions free tier is enough for small and medium projects.

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Frequently asked questions

What is CI?

Continuous Integration – on every push/PR, build, lint and tests run automatically. The goal is to catch errors early, before merge.

What is CD?

Continuous Deployment/Delivery – after a successful build, code is deployed automatically (e.g. to staging or production). Reduces manual work and release errors.

How do I start with GitHub Actions?

Create .github/workflows/ci.yml with a job that on push/PR uses actions/checkout, sets Node version, runs npm ci && npm run build && npm test. Then add a deploy step on push to main.