It works pretty well. Like I say, if you set the /books folder to the same data folder as calibre, when you download a book, it will autoimport into calibre. It will pop up a dialog for you to save the book locally, just cancel because calibre will have imported the temp file it creates on the filesystem. Then make sure you've set the Calibre Autoimport to delete source files.

Fix the IRC name in the openbooks config below

version: "2.1"
services:
  calibre:
    image: lscr.io/linuxserver/calibre:latest
    container_name: calibre
    environment:
      - PUID=0
      - PGID=0
      - TZ=America/Denver
    security_opt:
      - seccomp=unconfined
    volumes:
      - ./data:/config
    ports:
      - 7080:8080
      - 7081:8081
    restart: unless-stopped
    labels:
      - com.centurylinklabs.watchtower.enable=true

  calibre-web:
    image: lscr.io/linuxserver/calibre-web:latest
    container_name: calibre-web
    environment:
      - PUID=0
      - PGID=0
      - TZ=America/Denver
      - DOCKER_MODS=linuxserver/mods:universal-calibre #optional
    volumes:
      - ./data/web-config:/config
      - ./data/:/books
    ports:
      - 7083:8083
    restart: unless-stopped
    labels:
      - com.centurylinklabs.watchtower.enable=true

  openbooks:
    ports:
      - 7082:80
    volumes:
      - './data/:/books'
    restart: unless-stopped
    container_name: OpenBooks
    command: --name <somebullshitnamehere> --persist
    environment:
      - BASE_PATH=/
    image: evanbuss/openbooks:latest
    labels:
      - com.centurylinklabs.watchtower.enable=true```