Phoenix, node.js (webpack), postgres - linting + tests - circleCI (2.0)

config.yml

version: 2
jobs:
  build:
    docker:
      - image: bitwalker/alpine-elixir-phoenix:1.5.2
      - image: postgres:9.4.1
        environment:
          POSTGRES_USER: ubuntu
    working_directory: ~/repo
    steps:
      - checkout

      - restore_cache:
          keys:
            - v2-mix-cache-{{ .Branch }}-{{ checksum "mix.lock" }}
            - v2-mix-cache-{{ .Branch }}
            - v2-mix-cache
      - restore_cache:
          keys:
            - v2-build-cache-{{ .Branch }}
            - v2-build-cache
      - restore_cache:
          keys:
            - v2-npm-cache-{{ .Branch }}-{{ checksum "package-lock.json" }}
            - v2-npm-cache-{{ .Branch }}
            - v2-npm-cache

      - run: mix do deps.get, compile
      - run:
          command: mix compile
          environment:
            MIX_ENV: test
      - run: ls -laR _build > build_checksum
      - run: npm install

      - save_cache:
          key: v2-mix-cache-{{ .Branch }}-{{ checksum "mix.lock" }}
          paths: deps
      - save_cache:
          key: v2-build-cache-{{ .Branch }}-{{ checksum "build_checksum" }}
          paths: _build
      - save_cache:
          key: v2-npm-cache-{{ .Branch }}-{{ checksum "package-lock.json" }}
          paths: node_modules

      - run: npm run lint
      - run: mix phx.digest
      - run: mix credo
      - run: mix do ecto.create, ecto.migrate
      - run: mix test