config.yml

version: 2
jobs:
# いつものbuildやtestはこの下に書いておく
  build_and_test:
    docker:
      - image: circleci/ruby:2.4.1-node
        environment:
          RAILS_ENV: test
    steps:
      - checkout # やテストなど…。
# ここが今回のポイント
  bundle_update:
    docker:
      - image: circleci/ruby:2.4.1-node
    steps:
      - checkout
      - run:
          name : bundle update
          command: |
            gem update bundler -N
            gem install circleci-bundle-update-pr -N
            circleci-bundle-update-pr ${BUNDLE_UPDATE_GITHUB_USERNAME} ${BUNDLE_UPDATE_GITHUB_EMAIL}
workflows:
  version: 2
  build:
    jobs:
      - build_and_test
  auto_bundle_update:
    triggers:
      - schedule:
          cron: "00 1 * * 1" # 毎週月曜日
          filters:
            branches:
              only:
                - master
    jobs:
      - bundle_update