# Dev-only Postgres matching the default DATABASE_URL in internal/config.
name: fullstack-backend

services:
  db:
    image: postgres:18-alpine
    environment:
      POSTGRES_USER: fullstack
      POSTGRES_PASSWORD: fullstack
      POSTGRES_DB: fullstack
    ports:
      - "5432:5432"
    volumes:
      # postgres:18+ wants the mount at /var/lib/postgresql (not .../data)
      # so in-place major upgrades via pg_upgrade remain possible.
      - pgdata:/var/lib/postgresql
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U fullstack -d fullstack"]
      interval: 2s
      timeout: 2s
      retries: 15

volumes:
  pgdata: