architect.yml

name: nodejs
description: |
  Example component that includes a NodeJS server that renders templates
  and allows creation of items in a database
homepage: https://github.com/architect-templates/nodejs
keywords:
  - architect
  - examples
  - postgres
  - express
  - nodejs

# Add secrets to be used by different services. For more information:
# https://docs.architect.io/deployments/secrets/
secrets:
  db_user:
    description: Root user to assign to the component's database
    default: architect
  db_pass:
    description: Root password to assign to the component's database
    default: secret
  db_name:
    description: Name of the database the component will store content in
    default: app-db
  db_port:
    description: Port for the database
    default: 5432
  app_port:
    description: Port the app accepts connections on
    default: 8080

services:
  ### This service is the actual Node.js component ###
  app:
    # Build context is the location of your application relative to the architect.yml file
    build:
      context: .
    depends_on:
      - database
    interfaces:
      main:
        port: ${{ secrets.app_port }}
        ingress:
          subdomain: app
    # The liveness_probe makes sure the application is healthy - if not, it will re-start the application
    liveness_probe:
      command: curl --fail localhost:8080
      interval: 5s
      failure_threshold: 3
    # Set environment variables for your application here
    environment:
      DB_ADDR: ${{ services.database.interfaces.main.url }}/${{ secrets.db_name }}
      DB_USER: ${{ secrets.db_user }}
      DB_PASS: ${{ secrets.db_pass }}
      PORT: ${{ secrets.app_port }}
    # Debug block is used to enable hot-reloading to make real-time changes to an
    #   application while running `architect dev`. For more info, see -
    #   https://docs.architect.io/components/local-configuration/#hot-reloading
    debug:
      command: npm run dev
      build:
        args:
          NODE_ENV: development
      volumes:
        src:
          # The `WORKDIR` defined in the Dockerfile (/usr/src/app) + src
          mount_path: /usr/src/app/src
          # Path to source code relative to the architect.yml file
          host_path: ./src
  # Database service
  database:
    image: postgres:12
    interfaces:
      main:
        port: ${{ secrets.db_port }}
        protocol: postgresql
    liveness_probe:
      command: pg_isready -d ${{ secrets.db_name }} -U ${{ secrets.db_user }}
      interval: 3s
      failure_threshold: 3
    environment:
      POSTGRES_USER: ${{ secrets.db_user }}
      POSTGRES_PASSWORD: ${{ secrets.db_pass }}
      POSTGRES_DB: ${{ secrets.db_name }}