version: '3.8'

# Deploy with:
#   docker stack deploy -c postgres.yml postgres
#
# Runs on: POSTGRES_INSTANCE (ip-10-0-1-173)
# Creates databases and users for all services on first boot via init scripts.
# Data is persisted in a named Docker volume on the postgres node.

services:
  postgres:
    image: postgres:16
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: ${POSTGRES_PASSWORD}
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    networks:
      - overlay-net
    deploy:
      replicas: 1
      placement:
        constraints:
          - node.hostname == pve-postgres
      restart_policy:
        condition: on-failure
        delay: 5s
        max_attempts: 3

volumes:
  postgres_data:

networks:
  overlay-net:
    external: true
    name: ${OVERLAY_NETWORK:-homelab-net}