docker-compose.yml

services:
  postgres:
    image: postgres:16-alpine
    container_name: sovereign_hub_postgres
    restart: unless-stopped
    environment:
      # Docker Compose reads these values from a local .env file in the project root.
      POSTGRES_USER: ${POSTGRES_USER}
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
      POSTGRES_DB: ${POSTGRES_DB}
    ports:
      # Override POSTGRES_HOST_PORT in .env when port 5432 is already occupied locally.
      - "${POSTGRES_HOST_PORT:-5432}:5432"
    volumes:
      # Keep local development data across container restarts.
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U $${POSTGRES_USER} -d $${POSTGRES_DB}"]
      interval: 5s
      timeout: 5s
      retries: 5
      start_period: 10s

volumes:
  postgres_data: