Include URL rewriting support in nginx config

[SenorSmartyPants]

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Expected Behavior

When editing config_local.php to enable url writing, it should not generate a 404 error when attempting to download.
$config['cops_use_url_rewriting'] = "1";

NGINX config is listed here
https://github.com/seblucas/cops/wiki/Url-Rewriting-with-COPS

Current Behavior

404 error is generated for all /download or /view urls

Steps to Reproduce

1. edit config_local.php to include $config['cops_use_url_rewriting'] = "1";
2. navigate to book using COPS server.
3. Click download, or folder buttons
4. get 404 error

Environment

OS: Armbian
CPU architecture: arm64
How docker service was installed: from the distro repo, using armbian-setup

Command used to create docker container (run/create/compose/screenshot)

  cops:
    image: linuxserver/cops
    container_name: cops
    environment:
      - TZ=${TZ}
      - PUID=${PUID}
      - PGID=100
    volumes:
      - /opt/appdata/cops:/config
      - /mnt/storage/media/Books:/books
    ports:
      - 9090:80
    restart: unless-stopped

Docker logs

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