docker-compose.yaml

services:
  springboot-app:
    build: .
    ports:
      - "8080:8080"
    depends_on:
      - postgres
    environment:
      DBURL: ${DBURL:-postgres:5432}
      DBNAME: ${DBNAME:-library-app}
      DBUSERNAME: ${DBUSERNAME:?set DBUSERNAME in .env}
      DBPASSWORD: ${DBPASSWORD:?set DBPASSWORD in .env}

  postgres:
    image: postgres:16-alpine
    ports:
      - 5432:5432
    environment:
      POSTGRES_USER: ${DBUSERNAME:?set DBUSERNAME in .env}
      POSTGRES_PASSWORD: ${DBPASSWORD:?set DBPASSWORD in .env}
      POSTGRES_DB: ${DBNAME:-library-app}
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
      interval: 5s
      timeout: 5s
      retries: 10
    volumes:
      - /var/lib/postgresql/data