docker-compose.yml

# This file is only used to set up local development. When Docker images are built for production,
# the Dockerfile is solely used.
version: "3.7"
services:
  # db is a service which sets up a local database used for testing purposes.
  # For production, Terraform points the Node server to speak with RDS via environment variables.
  db:
    image: charliemcgrady-db
    build:
      context: "./dev/db"
    environment:
      POSTGRES_PASSWORD: postgres
      POSTGRES_USER: postgres
      POSTGRES_DB: charliemcgrady
    ports:
      - "5432:5432"
  node-server:
    image: charliemcgrady-node-server
    build:
      # Although the code bundled in the final image is contained within ./app/server, the context
      # of the build needs to be the parent directly so we can link shared packages (e.g. rgb-commons)
      context: "./app"
      dockerfile: Dockerfile-node-server
    # Sleep to wait for DB to accept connections, then install app, run migrations, and start server
    command: sh -c "sleep 10 && echo 'Starting node server' && npm run migrate-db && npm run start"
    volumes:
      # Mount ./app as a volume to enable hot reloading of the app during development.
      # The process is as follows:
      #   - The 'command' attribute define above executes `npm run start` (defined in package.json).
      #     This command starts nodemon, which will restart the server if files in ./app/dist change
      #   - `npm run dev` starts the typescript compiler. Any changes are placed in ./app/dist,
      #     and nodemon restarts the server
      - ./app:/usr/app
    env_file:
      - .env
    depends_on:
      - db
    ports:
      - "4000:4000"