The LinuxServer.io team brings you another container release featuring:

regular and timely application updates
easy user mappings (PGID, PUID)
custom base image with s6 overlay
weekly base OS updates with common layers across the entire LinuxServer.io ecosystem to minimise space usage, down time and bandwidth
regular security updates

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linuxserver/cops

Cops by Sébastien Lucas, stands for Calibre OPDS (and HTML) Php Server.

COPS links to your Calibre library database and allows downloading and emailing of books directly from a web browser and provides a OPDS feed to connect to your devices.

Changes in your Calibre library are reflected immediately in your COPS pages.

See : COPS's home for more details.

Don't forget to check the Wiki.

Why? (taken from the author's site)

In my opinion Calibre is a marvelous tool but is too big and has too much dependencies to be used for its content server.

That's the main reason why I coded this OPDS server. I needed a simple tool to be installed on a small server (Seagate Dockstar in my case).

I initially thought of Calibre2OPDS but as it generate static file no search was possible.

Later I added an simple HTML catalog that should be usable on my Kobo.

So COPS's main advantages are :

No need for many dependencies.
No need for a lot of CPU or RAM.
Not much code.
Search is available.
With Dropbox / owncloud it's very easy to have an up to date OPDS server.
It was fun to code.

If you want to use the OPDS feed don't forget to specify feed.php at the end of your URL.

Supported Architectures

We utilise the docker manifest for multi-platform awareness. More information is available from docker here and our announcement here.

Simply pulling lscr.io/linuxserver/cops:latest should retrieve the correct image for your arch, but you can also pull specific arch images via tags.

The architectures supported by this image are:

Architecture	Available	Tag
x86-64	✅	amd64-<version tag>
arm64	✅	arm64v8-<version tag>
armhf	✅	arm32v7-<version tag>

Application Setup

Access the webui at http://<docker host ip>:80. For connecting via OPDS on a mobile device use http://<docker host ip>:80/feed.php. It is strongly suggested that you reverse proxy this prior to exposing to the internet. For more information, such as requiring credentials, check the COPS Wiki (linked above).

The linuxserver version gives you access to config_local.php in /config to customise your install to suit your needs, it also includes the dependencies required to directly view epub books in your browser.

Usage

Here are some example snippets to help you get started creating a container.

docker-compose (recommended, click here for more info)

---
version: "2.1"
services:
  cops:
    image: lscr.io/linuxserver/cops:latest
    container_name: cops
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
    volumes:
      - <path to data>:/config
      - <path to data>:/books
    ports:
      - 80:80
    restart: unless-stopped

docker cli (click here for more info)

docker run -d \
  --name=cops \
  -e PUID=1000 \
  -e PGID=1000 \
  -e TZ=Etc/UTC \
  -p 80:80 \
  -v <path to data>:/config \
  -v <path to data>:/books \
  --restart unless-stopped \
  lscr.io/linuxserver/cops:latest

Parameters

Container images are configured using parameters passed at runtime (such as those above). These parameters are separated by a colon and indicate <external>:<internal> respectively. For example, -p 8080:80 would expose port 80 from inside the container to be accessible from the host's IP on port 8080 outside the container.

Parameter	Function
`-p 80`	WebUI
`-e PUID=1000`	for UserID - see below for explanation
`-e PGID=1000`	for GroupID - see below for explanation
`-e TZ=Etc/UTC`	specify a timezone to use, see this list.
`-v /config`	COPS Application Data.
`-v /books`	Calibre metadata.db location.

Environment variables from files (Docker secrets)

You can set any environment variable from a file by using a special prepend FILE__.

As an example:

-e FILE__PASSWORD=/run/secrets/mysecretpassword

Will set the environment variable PASSWORD based on the contents of the /run/secrets/mysecretpassword file.

Umask for running applications

For all of our images we provide the ability to override the default umask settings for services started within the containers using the optional -e UMASK=022 setting. Keep in mind umask is not chmod it subtracts from permissions based on it's value it does not add. Please read up here before asking for support.

User / Group Identifiers

When using volumes (-v flags) permissions issues can arise between the host OS and the container, we avoid this issue by allowing you to specify the user PUID and group PGID.

Ensure any volume directories on the host are owned by the same user you specify and any permissions issues will vanish like magic.

In this instance PUID=1000 and PGID=1000, to find yours use id user as below:

  $ id username
    uid=1000(dockeruser) gid=1000(dockergroup) groups=1000(dockergroup)

Docker Mods

We publish various Docker Mods to enable additional functionality within the containers. The list of Mods available for this image (if any) as well as universal mods that can be applied to any one of our images can be accessed via the dynamic badges above.

Support Info

Shell access whilst the container is running: docker exec -it cops /bin/bash
To monitor the logs of the container in realtime: docker logs -f cops
container version number
- docker inspect -f '{{ index .Config.Labels "build_version" }}' cops
image version number
- docker inspect -f '{{ index .Config.Labels "build_version" }}' lscr.io/linuxserver/cops:latest

Updating Info

Most of our images are static, versioned, and require an image update and container recreation to update the app inside. With some exceptions (ie. nextcloud, plex), we do not recommend or support updating apps inside the container. Please consult the Application Setup section above to see if it is recommended for the image.

Below are the instructions for updating containers:

Via Docker Compose

Update all images: docker-compose pull
- or update a single image: docker-compose pull cops
Let compose update all containers as necessary: docker-compose up -d
- or update a single container: docker-compose up -d cops
You can also remove the old dangling images: docker image prune

Via Docker Run

Update the image: docker pull lscr.io/linuxserver/cops:latest
Stop the running container: docker stop cops
Delete the container: docker rm cops
Recreate a new container with the same docker run parameters as instructed above (if mapped correctly to a host folder, your /config folder and settings will be preserved)
You can also remove the old dangling images: docker image prune

Via Watchtower auto-updater (only use if you don't remember the original parameters)

Pull the latest image at its tag and replace it with the same env variables in one run:

docker run --rm \
-v /var/run/docker.sock:/var/run/docker.sock \
containrrr/watchtower \
--run-once cops

You can also remove the old dangling images: docker image prune

Note: We do not endorse the use of Watchtower as a solution to automated updates of existing Docker containers. In fact we generally discourage automated updates. However, this is a useful tool for one-time manual updates of containers where you have forgotten the original parameters. In the long term, we highly recommend using Docker Compose.

Image Update Notifications - Diun (Docker Image Update Notifier)

We recommend Diun for update notifications. Other tools that automatically update containers unattended are not recommended or supported.

Building locally

If you want to make local modifications to these images for development purposes or just to customize the logic:

git clone https://github.com/linuxserver/docker-cops.git
cd docker-cops
docker build \
  --no-cache \
  --pull \
  -t lscr.io/linuxserver/cops:latest .

The ARM variants can be built on x86_64 hardware using multiarch/qemu-user-static

docker run --rm --privileged multiarch/qemu-user-static:register --reset

Once registered you can define the dockerfile to use with -f Dockerfile.aarch64.

Versions

13.04.23: - Move ssl.conf include to default.conf.
19.01.23: - Rebase to alpine 3.17 with php8.1.
20.08.22: - Rebasing to alpine 3.15 with php8. Restructure nginx configs (see changes announcement).
22.11.20: - Pin composer version to 1.10.17.
01.06.20: - Rebasing to alpine 3.12.
19.12.19: - Rebasing to alpine 3.11.
28.06.19: - Rebasing to alpine 3.10.
23.03.19: - Switching to new Base images, shift to arm32v7 tag.
27.02.19: - Upgrade packages during install to prevent mismatch with baseimage.
22.02.19: - Rebasing to alpine 3.9.
14.01.19: - Add multiarch and pipeline logic.
21.08.18: - Rebase to alpine 3.8.
02.07.18: - Add php7-ctype dependency.
08.01.18: - Rebase to alpine 3.7.
25.05.17: - Rebase to alpine 3.6.
03.04.17: - Add composer packages, reduce layers.
02.04.17: - Updated to version 1.1.0.
05.02.17: - Updated to Alpine 3.5 & PHP7.
24.10.16: - Updated to implement user based config.
24.10.16: - Updated to version 1.0.1.
14.10.16: - Add version layer information.
28.09.16: - Add php5-zlib.
11.09.16: - Add layer badges to README.
29.08.16: - Add php5-opcache.
28.08.16: - Add badges to README.
12.08.16: - Initial Release.

drizuid/docker-cops