demo YAML

services:
  bookstack:
    image: lscr.io/linuxserver/bookstack:latest
    container_name: bookstack
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
      - APP_URL=https://domain.tld
      - APP_KEY=
      - DB_HOST=bookstack_db
      - DB_PORT=3306
      - DB_USERNAME=bookstackuser
      - DB_PASSWORD=
      - DB_DATABASE=bookstackapp
    volumes:
      - ./bookstack/config2:/config
    ports:
      - 6875:80
    restart: unless-stopped
    depends_on:
      - bookstack_db

  bookstack_db:
    image: mariadb:latest
    container_name: bookstack_db
    environment:
      - MYSQL_ROOT_PASSWORD=
      - MYSQL_DATABASE=bookstackapp
      - MYSQL_USER=bookstackuser
      - MYSQL_PASSWORD=
    volumes:
      - ./bookstack/db2:/var/lib/mysql
    restart: unless-stopped