CircleCI 2.1 Config for Rails 7 Project with Yarn

config.yml

version: 2.1

executors:
  default:
    working_directory: ~/my_project
    docker:
      - image: cimg/ruby:3.1.0
        environment:
          BUNDLE_JOBS: 3
          BUNDLE_PATH: vendor/bundle
          BUNDLE_RETRY: 3
          BUNDLER_VERSION: 2.0.1
          RAILS_ENV: test
          DB_HOST: 127.0.0.1
          PG_HOST: 127.0.0.1
          PGUSER: my_project
          CI: circleci
      - image: cimg/postgres:14.5-postgis
        environment:
          POSTGRES_DB: my_project_postgresql_test
          POSTGRES_USER: my_project
      - image: cimg/node:19.2.0

commands:
  configure_bundler:
    description: Configure bundler
    steps:
      - run:
          name: Configure bundler
          command: |
            echo 'export BUNDLER_VERSION=$(cat Gemfile.lock | tail -1 | tr -d " ")' >> $BASH_ENV
            source $BASH_ENV
            gem install bundler

  build:
    executor: default
    steps:
      - checkout
      - restore_cache:
          keys:
            - my_project-{{ .Branch }}-{{ checksum "Gemfile.lock" }}
            - my_project-
      - configure_bundler
      - run:
          name: Install bundle
          command: bundle install --jobs=$BUNDLE_JOBS --retry=$BUNDLE_RETRY
      - run:
          name: Wait for DB
          command: dockerize -wait tcp://127.0.0.1:5432 -timeout 1m
      - run:
          name: Setup DB
          command: bundle exec rails db:create db:schema:load --trace
      - run:
          name: Precompile Assets
          command: bundle exec rake assets:precompile
      - save_cache:
          key: my_project-{{ .Branch }}-{{ checksum "Gemfile.lock" }}
          paths:
            - vendor/bundle
      - persist_to_workspace:
          root: ~/
          paths:
            - ./my_project

  rake_test:
    executor: default
    steps:
      - checkout
      - attach_workspace:
          at: ~/my_project
      - run: bundle config set --local path $BUNDLE_PATH
      - run: bundle
      - run: bundle exec rake db:create
      - run: bundle exec rake db:schema:load

      - run:
          name: run tests
          command: |
            mkdir /tmp/test-results
            TEST_FILES="$(circleci tests glob "spec/**/*_spec.rb" | circleci tests split --split-by=timings)"
            bundle exec rspec --format progress \
                            --format RspecJunitFormatter \
                            --out /tmp/test-results/rspec.xml \
                            --format progress \
                            -- \
                            $TEST_FILES
      - store_test_results:
          path: /tmp/test-results

workflows:
  version: 2
  run_tests:
    jobs:
      - build
      - rake_test:
          requires:
            - build