Pre-compile Assets and Cache for CircleCI

.circleci_config.yml

# Ruby CircleCI 2.0 configuration file
#
# Check https://circleci.com/docs/2.0/language-ruby/ for more details
#
version: 2
jobs:
  build:
    environment:
      BUNDLE_GEMFILE: Gemfile
      BUNDLE_WITHOUT: "production:staging:development"

    docker:
      # specify the version you desire here
      - image: circleci/ruby:2.4.3-node-browsers
        environment:
          RAILS_ENV: test
          RACK_ENV: test
          PGHOST: 127.0.0.1
          PGUSER: ubuntu

      # Specify service dependencies here if necessary
      # CircleCI maintains a library of pre-built images
      # documented at https://circleci.com/docs/2.0/circleci-images/
      - image: circleci/postgres:alpine
        environment:
          POSTGRES_USER: ubuntu
          POSTGRES_DB: rails-bootstrap_test

    working_directory: ~/repo

    steps:
      - checkout

      # Download and cache dependencies
      - restore_cache:
          keys:
          - v1-dependencies-{{ checksum "Gemfile.lock" }}
          # fallback to using the latest cache if no exact match is found
          - v1-dependencies-

      - run: bundle check --path vendor/bundle || bundle install --deployment --jobs=4 --retry=3

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

      - restore_cache:
          keys:
            - v1-asset-cache-{{ arch }}-{{ .Branch }}
            - v1-asset-cache-

      - run: bundle exec rake assets:precompile

      - save_cache:
          key: v1-asset-cache-{{ arch }}-{{ .Branch }}-{{ epoch }}
          paths:
            - public/assets
            - tmp/cache/assets/sprockets

      - run: bundle exec rake db:schema:load
      - run: bundle exec rake test test:system