Node + Postgres = CircleCI config

config.yml

version: 2

jobs:
  build:
    docker:
      - image: circleci/node:latest
        environment:
          DATABASE_URL: postgresql://postgres:postgres@localhost:5432/db_name
          POSTGRES_USER: postgres
          POSTGRES_DB: db_name

      - image: circleci/postgres:10

    working_directory: ~/repo

    steps:
      - checkout

      - restore_cache:
          keys:
            - v1-dependencies-{{ checksum "package.json" }}
            - v1-dependencies-

      - run: yarn install

      - save_cache:
          paths:
            - node_modules
          key: v1-dependencies-{{ checksum "package.json" }}

      # Download psql client
      - run: sudo apt-get install postgresql-client -y
      
      # Avoid db race conditions with Dockerize
      - run: dockerize -wait tcp://localhost:5432 -timeout 1m

      #  Create 'mmp_test' database
      - run: psql -U postgres -h localhost -p 5432 -c "create database db_name;"

      - run: yarn lint

      - run: yarn build

      - run: yarn test