version: 2
jobs:
  build:
    docker:
      - image: circleci/node:8.9.4
    steps:
      - checkout
      - restore_cache:
          key: yarn-cache
      - run:
          name: Install npm packages
          command: yarn --pure-lockfile
      - save_cache:
          key: yarn-cache
          paths:
            - ~/.cache/yarn
      - run:
          name: Linting
          command: npm run lint
  deploy_to_staging:
    docker:
      - image: circleci/node:8.9.4
    steps:
      - checkout
      - run: yarn
      - run:
          name: deploy to staging
          command: npm run deploy
workflows:
  version: 2
  build_and_deploy_to_staging:
    jobs:
      - build
      - deploy_to_staging:
          filters:
            branches:
              only: develop