jobs: 
  hello: 
    docker: 
      - 
        image: "circleci/node:12"
    steps: 
      - checkout
      - 
        run: "echo \"hello world\""
orbs: 
  node: circleci/node@3.0.0
version: 2.1
workflows: 
  tests: 
    jobs: 
      - hello