version: '3.8'

services:
  app:
    environment:
      - POSTGRES_HOST=db
      - POSTGRES_DB=nextcloud
      - POSTGRES_USER=nextcloud
      - POSTGRES_PASSWORD_FILE=/run/secrets/db_password
      - NEXTCLOUD_UPDATE=1

  db:
    image: "postgres:13"
    command: -c "max_connections=${MAX_DB_CONNECTIONS:-100}"
    volumes:
      - "postgres:/var/lib/postgresql/data"
    networks:
      - internal
    environment:
      POSTGRES_USER: nextcloud
      POSTGRES_PASSWORD_FILE: /run/secrets/db_password
      POSTGRES_DB: nextcloud
    secrets:
      - db_password
    healthcheck:
      test: ["CMD-SHELL", "pg_isready", "-U", "nextcloud"]
      interval: 10s
      timeout: 5s
      retries: 5
    deploy:
      labels:
        backupbot.backup.pre-hook: "/pg_backup.sh backup"
        backupbot.backup.volumes.postgres.path: "backup.sql"
        backupbot.restore.post-hook: '/pg_backup.sh restore'
    configs:
        - source: pg_backup
          target: /pg_backup.sh
          mode: 0555

volumes:
  postgres:

configs:
  pg_backup:
    name: ${STACK_NAME}_pg_backup_${PG_BACKUP_VERSION}
    file: pg_backup.sh