GitHub Actions

name: hello-world
on: push
jobs:
    hello-world-job:
        runs-on: ubuntu-latest
        steps:
            - name: Hello World
              run: echo "Hello World!"

name: learn-github-actions
run-name: ${{ github.actor }} is learning GitHub Actions
on: [push]
jobs:
    check-bats-version:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v4
            - uses: actions/setup-node@v3
              with:
                  node-version: '14'
            - run: npm install -g bats
            - run: bats -v

name: Event-trigger-on-push-example

on: [push] # event is defined here

jobs:
    build:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v2
            - name: Run a script
              run: echo "This workflow runs on every push to the repository."

name: Single Job
on: [push]
jobs:
    build:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v2
            - name: Run a build script
              run: script/build

name: CI Workflow

on: [push]

jobs:
    job-1:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v2
            - name: Runs job 1
              run: echo "Running Job 1"

    job-2:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v2
            - name: Runs job 2
              run: echo "Running Job 2"

    job-3:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v2
            - name: Runs job 3
              run: echo "Running Job 3"

jobs:
    build:
        runs-on: ubuntu-latest
        steps:
            # step 1
            - name: Check out repository
              uses: actions/checkout@v2

            # step 2
            - name: Set up Node.js
              uses: actions/setup-node@v2
              with:
                  node-version: '14'

            # step 3
            - name: Install dependencies
              run: npm install

            # step 4
            - name: Run tests
              run: npm test

name: Workflow
on: [push]
jobs:
    build:
        runs-on: ubuntu-latest # default runner
        steps:
            - uses: actions/checkout@v2
            - name: Run a script
              run: echo "Hello, world!"

name: Workflow with Self-Hosted Runner
on: [push]
jobs:
    build:
        runs-on: self-hosted
        steps:
            - uses: actions/checkout@v2
            - name: Run a script
              run: echo "Hello from self-hosted runner!"

jobs:
    build:
        runs-on: ubuntu-latest
        env:
            CUSTOM_VARIABLE: 'Hello, World!' # Custom variable defined using env:
        steps:
            - name: Check environment variable
              run: echo "Value of CUSTOM_VAR is $CUSTOM_VAR"

name: Workflow with Secrets

on: [push]

jobs:
    example_job:
        runs-on: ubuntu-latest
        steps:
            - name: Checkout repository
              uses: actions/checkout@v2
            - name: Use a secret
              run: echo "The secret is ${{ secrets.MY_SECRET }}"

jobs:
    build:
        runs-on: ubuntu-latest
        steps:
            - name: Build project
              run: make build
            - name: Upload build artifact
              uses: actions/upload-artifact@v3 # upload Artifacts prebuilt action
              with:
                  name: my-artifact
                  path: path/to/artifact

jobs:
    build:
        runs-on: ubuntu-latest
        steps:
            - uses: actions/checkout@v2
            - name: Cache dependencies
              uses: actions/cache@v2 # stores downloaded packages or compiled binaries
              with:
                  path: |
                      path/to/dependencies
                      another/path
                  key: ${{ runner.os }}-deps-${{ hashFiles('**/lockfile') }} # hash of the dependency lock file is generated in the OS
            - name: Install dependencies
              run: install-command

jobs:
    build:
        runs-on: ubuntu-latest
        strategy:
            matrix:
                node-version: [12.x, 14.x, 16.x]
                # matrix strategy runs enables you to run jobs across multiple combinations of environments and OS's
                os: [ubuntu-latest, windows-latest, macOS-latest]
        steps:
            - uses: actions/checkout@v2
            - name: Use Node.js ${{ matrix.node-version }}
              uses: actions/setup-node@v1
              with:
                  node-version: ${{ matrix.node-version }}
            - run: npm install
            - run: npm test
              env:
                  CI: true

jobs:
    build:
        runs-on: ubuntu-latest
        steps:
            - name: Checkout code
              uses: actions/checkout@v2
            - name: Run build
              if: github.ref == 'refs/heads/main' # "Run build" step will only execute if the current branch is main.
              run: make build

jobs:
    test:
        runs-on: ubuntu-latest
        steps:
            - name: Checkout code
              uses: actions/checkout@v2
            - name: Run tests
              if: github.event_name == 'pull_request' # "Run tests" step is executed only when the workflow is triggered by a pull request event
              run: npm test

steps:
    - name: Set environment variable
      run: echo "NAME=value" >> $GITHUB_ENV

jobs:
    my_job:
        runs-on: ubuntu-latest
        concurrency:
            group: ${{ github.head_ref }}
            cancel-in-progress: true
        steps:
            - name: Run a script
              run: echo "Running script..."