docker-compose.yml

version: '3.5'
services:
  api1: &api
    image: rafaelktakahashi/ferrugem:latest
    restart: always
    hostname: api1
    environment:
      DATABASE_URL: postgres://postgres:999@db:5432/postgres?schema=public&sslmode=disable
      MAX_DB_CONNECTIONS: 9
      KEEPALIVE_DURATION: 5
      DB_POOL_TIMEOUT: 20000
      PORT: 3000
    ulimits:
      nofile:
        soft: 1000000
        hard: 1000000
    depends_on:
      - db
    expose:
      - "3000"
    ports:
      # For diagnosing
      - "3000:3000"
    deploy:
      resources:
        limits:
          cpus: '0.11'
          memory: '20MB'

  api2:
    <<: *api
    image: rafaelktakahashi/ferrugem:latest
    hostname: api2
    ports:
      - "3001:3000"

  nginx:
    image: nginx:1.25.4
    volumes:
      - ./nginx/nginx.conf:/etc/nginx/nginx.conf:ro
    depends_on:
      - api1
      - api2
    ports:
      - "9999:9999"
    deploy:
      resources:
        limits:
          cpus: '0.18'
          memory: '30MB'
  
  # Banco postgres
  db:
    image: postgres:16
    hostname: db
    environment:
      - POSTGRES_PASSWORD=999
      - POSTGRES_USER=postgres
      - POSTGRES_DB=postgres
      - POSTGRES_HOST_AUTH_METHOD=trust
    ports:
      - "5432:5432" # Exposing is useful for debugging. 
    volumes:
      - ./db/init-db.sql:/docker-entrypoint-initdb.d/init-db.sql
    deploy:
      resources:
        limits:
          cpus: "1.1"
          memory: "480MB"

# 1.5 CPU, 550MB total