on: [push]
jobs:
  upload:
    runs-on: docker
    steps:
    - run: mkdir -p path/to/artifact
    
    - run: echo hello > path/to/artifact/world.txt
    
    - uses: actions/upload-artifact@v3
      with:
        name: my-artifact
        path: path/to/artifact/world.txt

  download:
    runs-on: docker
    steps:
    - run: "! test -f world.txt"

    - uses: actions/download-artifact@v3
      with:
        name: my-artifact
        
    - run: "test -f world.txt"