Docker Compose for Spring Boot + PostgreSQL

services:
  app:
    build: .
    ports:
      - target: 8080
        mode: ingress
    environment:
      - SPRING_DATASOURCE_URL=jdbc:postgresql://db:5432/springboot
      - SPRING_DATASOURCE_USERNAME=postgres
      - SPRING_DATASOURCE_PASSWORD=${SPRING_DATASOURCE_PASSWORD}
      - SPRING_PROFILES_ACTIVE=production
    healthcheck:
      test:
        - CMD
        - curl
        - -f
        - http://localhost:8080/
      interval: 30s
      timeout: 5s
      retries: 3
    depends_on:
      - db
    deploy:
      resources:
        reservations:
          cpus: "1"
          memory: 512M
    restart: unless-stopped
  db:
    image: postgres:16
    ports:
      - target: 5432
        mode: host
    environment:
      - POSTGRES_DB=springboot
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
    healthcheck:
      test:
        - CMD-SHELL
        - pg_isready -U postgres
      interval: 10s
      timeout: 5s
      retries: 5
    deploy:
      resources:
        reservations:
          cpus: "0.5"
          memory: 256M
    restart: unless-stopped
    x-defang-postgres: true