動く中で一番何も追加してない状態の.circleci/config.yml

config.yml

 version: 2
 jobs:
   build:
     docker:
        - image: circleci/ruby:2.5.1-node-browsers
        - image: circleci/postgres:9.5-alpine
          environment:
            POSTGRES_USER: <USERNAME>
            POSTGRES_DB: <DBNAME>
            POSTGRES_PASSWORD: ""
     working_directory: ~/twofivepm
     steps:
       - checkout
       - restore_cache:
           keys:
           - v1-dependencies-{{ checksum "Gemfile.lock" }}
           # fallback to using the latest cache if no exact match is found
           - v1-dependencies-

       - run:
           name: install dependencies
           command: |
             bundle install --jobs=4 --retry=3 --path vendor/bundle

       - save_cache:
           paths:
             - ./vendor/bundle
           key: v1-dependencies-{{ checksum "Gemfile.lock" }}

       # Database setup
       - run: bundle exec rake db:create
       - run: bundle exec rake db:schema:load

       # run tests!
       - 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
       - store_artifacts:
           path: /tmp/test-results
           destination: test-results