services:
  safe:
    image: 'alpine'
    init: true
    command: ['/bin/sh', '-c', 'sleep infinity']  # never exiting
  failure:
    image: 'alpine'
    init: true
    command: ['/bin/sh', '-c', 'sleep 1 ; echo "exiting with error" ; exit 42']
  test:
    image: 'alpine'
    init: true
    command: ['/bin/sh', '-c', 'sleep 99999 ; echo "tests are OK"']  # very long job
    depends_on: [safe]