DevOps: What is GitHub Actions?

1# .github/workflows/ci.yml
2name: CI
3on:
4  push:
5    branches: [main]
6  pull_request:
7    branches: [main]
8
9jobs:
10  test:
11    runs-on: ubuntu-latest
12    strategy:
13      matrix:
14        node-version: [16, 18, 20]
15    steps:
16    - uses: actions/checkout@v4
17    - uses: actions/setup-node@v4
18      with:
19        node-version: ${{ matrix.node-version }}
20    - run: npm ci
21    - run: npm test
22
23  build:
24    needs: test
25    runs-on: ubuntu-latest
26    steps:
27    - uses: actions/checkout@v4
28    - run: docker build -t myapp .
29    - run: docker push ghcr.io/${{ github.repository }}
30
31  deploy:
32    needs: build
33    if: github.ref == 'refs/heads/main'
34    runs-on: ubuntu-latest
35    environment: production
36    steps:
37    - uses: actions/checkout@v4
38    - run: kubectl apply -f k8s/