# A Minimal Workflow — CI/CD

Source: https://www.geekswithgeeks.com/en/cicd/cicd-gha-workflow

> Trigger a workflow on push and run your tests automatically.

## What GitHub Actions is

**GitHub Actions** is GitHub's built-in CI/CD engine. You define **workflows** as YAML files in `.github/workflows/`, and GitHub runs them on events like a push or pull request.

## Run tests on every push

This workflow triggers on a push to `main`, checks out the code, sets up Node, installs dependencies, and runs the test suite.

```yaml
name: CI
on:
  push:
    branches: [main]

jobs:
  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: actions/setup-node@v4
        with:
          node-version: 20
      - run: npm ci
      - run: npm test
```

Output:

```
Runs automatically on GitHub-hosted infrastructure
```

## Where the file lives

Every file under `.github/workflows/*.yml` is a separate workflow. GitHub picks them up automatically — no separate setup or dashboard configuration needed.