Configuring GitHub-Hosted Runners

name: Build
on:
  push:
    branches: [ main ]
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Set up Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
      - run: npm ci

name: Build
on Ubuntu
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Run tests
        run: npm test

jobs:
  build:
    runs-on: ubuntu-24.04
    steps:
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "20"
      - name: Install dependencies
        run: npm ci

name: Example Workflow
on:
  push:
    branches: [ main ]
jobs:
  build:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

jobs:
  build:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Run tests
        run: echo "Running on ${{ matrix.os }}"

name: Build with larger runner
on: [push]
jobs:
  build:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout code
        uses: actions/checkout@v4
      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: '20'
      - name: Install dependencies
        run: npm ci
      - name: Run tests
        run: npm test

jobs:
  example-job:
    runs-on: ubuntu-latest
    steps:
      - name: Print runner info
        run: |
          echo "Runner OS: ${{ runner.os }}"
          echo "Runner Arch: ${{ runner.arch }}"
          echo "Temp Directory: ${{ runner.temp }}"

name: Check Runner Capabilities
on:
  push:
    branches: [ main ]

jobs:
  check-capabilities:
    runs-on: ubuntu-latest
    steps:
      - name: Print runner info
        run: |
          echo "OS: ${{ runner.os }}"
          echo "Architecture: ${{ runner.architecture }}"
          echo "CPU cores: ${{ runner.cpu }}"
          echo "Memory (GB): ${{ runner.memory }}"

name: Use Node.js
on:
  push:
    branches: [ main ]
jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Use Node.js
        uses: actions/setup-node@v4
        with:
          node-version: "20.11.0"
      - run: node --version

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v4

      - name: List files in workspace
        run: |
          echo "Workspace contents:"
          ls -la $GITHUB_WORKSPACE

      - name: Create a file in workspace
        run: |
          echo "Hello from GitHub Actions" > $GITHUB_WORKSPACE/hello.txt