Runners Reference

jobs:
  build:
    runs-on: ubuntu-latest

jobs:
  build:
    runs-on: ubuntu-22.04  # Pin to specific version

jobs:
  test:
    strategy:
      matrix:
        os: [ubuntu-latest, macos-latest, windows-latest]
    runs-on: ${{ matrix.os }}

jobs:
  build:
    runs-on: self-hosted

  gpu-job:
    runs-on: [self-hosted, linux, gpu]

  specific:
    runs-on: [self-hosted, linux, x64, production]

steps:
  - run: |
      echo "Runner name: ${{ runner.name }}"
      echo "OS: ${{ runner.os }}"           # Linux, Windows, macOS
      echo "Arch: ${{ runner.arch }}"       # X64, ARM64
      echo "Temp: ${{ runner.temp }}"
      echo "Tool cache: ${{ runner.tool_cache }}"

# Download
curl -o actions-runner-linux-x64.tar.gz -L \
  https://github.com/actions/runner/releases/download/v2.XXX.X/actions-runner-linux-x64-2.XXX.X.tar.gz

# Extract
tar xzf actions-runner-linux-x64.tar.gz

# Configure
./config.sh --url https://github.com/org/repo --token XXXXXX

# Run
./run.sh

# Or install as service
sudo ./svc.sh install
sudo ./svc.sh start

runs-on: [self-hosted, linux, gpu, cuda-11]

jobs:
  production:
    runs-on:
      group: production-runners
      labels: [linux, x64]

jobs:
  build:
    runs-on: ubuntu-latest
    container:
      image: node:20-alpine
      credentials:
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}
      env:
        NODE_ENV: production
      ports:
        - 80
      volumes:
        - /data:/data
      options: --cpus 2 --memory 4g

jobs:
  test:
    runs-on: ubuntu-latest
    services:
      postgres:
        image: postgres:15
        env:
          POSTGRES_PASSWORD: postgres
          POSTGRES_DB: test
        ports:
          - 5432:5432
        options: >-
          --health-cmd pg_isready
          --health-interval 10s
          --health-timeout 5s
          --health-retries 5

      redis:
        image: redis:7
        ports:
          - 6379:6379

steps:
  - run: |
      # In container job, use service name
      psql -h postgres -U postgres

      # In non-container job, use localhost
      psql -h localhost -p 5432 -U postgres

# Fast builds: use Linux
runs-on: ubuntu-latest

# macOS/iOS builds: use macOS
runs-on: macos-latest

# Windows-specific: use Windows
runs-on: windows-latest

# Heavy builds benefit from more cores
runs-on: ubuntu-latest-8-cores

- uses: actions/cache@v5
  with:
    path: ~/.npm
    key: npm-${{ runner.os }}-${{ hashFiles('**/package-lock.json') }}

strategy:
  fail-fast: false
  max-parallel: 4  # Limit concurrent jobs
  matrix:
    os: [ubuntu-latest, macos-latest, windows-latest]

- run: df -h

- run: |
    node --version
    python --version
    docker --version

- run: |
    echo "Runner: ${{ runner.name }}"
    echo "OS: ${{ runner.os }}"
    echo "Arch: ${{ runner.arch }}"
    uname -a
    cat /etc/os-release || true