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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• Blog - all the things you can do with our containers including How-To guides, opinions and much more!
• Discord - realtime support / chat with the community and the team.
• Discourse - post on our community forum.
• Fleet - an online web interface which displays all of our maintained images.
• GitHub - view the source for all of our repositories.
• Open Collective - please consider helping us by either donating or contributing to our budget

linuxserver/cops

Cops by Sébastien Lucas, now maintained by MikesPub, 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 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	❌

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/index.php/feed. 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

To help you get started creating a container from this image you can either use docker-compose or the docker cli.

Note

Unless a parameter is flaged as 'optional', it is mandatory and a value must be provided.

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

---
services:
  cops:
    image: lscr.io/linuxserver/cops:latest
    container_name: cops
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=Etc/UTC
    volumes:
      - /path/to/cops/config:/config
      - /path/to/data:/books
    ports:
      - 80:80
      - 443:443
    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 \
  -p 443:443 \
  -v /path/to/cops/config:/config \
  -v /path/to/data:/books \
  --restart unless-stopped \
  lscr.io/linuxserver/cops:latest

Parameters

Containers 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 80:80	HTTP WebUI
-p 443:443	HTTPS 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__MYVAR=/run/secrets/mysecretvariable

Will set the environment variable MYVAR based on the contents of the /run/secrets/mysecretvariable 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 your_user as below:

id your_user

Example output:

uid=1000(your_user) gid=1000(your_user) groups=1000(your_user)

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 (noted in the relevant readme.md), 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 images:

  • All images:

    docker-compose pull

  • Single image:

    docker-compose pull cops

• Update containers:

  • All containers:

    docker-compose up -d

  • 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

Image Update Notifications - Diun (Docker Image Update Notifier)

Tip

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 and vice versa using lscr.io/linuxserver/qemu-static

docker run --rm --privileged lscr.io/linuxserver/qemu-static --reset

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

Versions

• 16.12.24: - Rebase to Alpine 3.21.
• 24.09.24: - Existing users should verify: site-confs/default.conf - Update rewriting rules default site conf.
• 14.09.24: - Ensure user config files have the right permissions.
• 09.09.24: - In COPS 3.x, the config_local.php is being moved over to config/local.php and this container will automatically migrate it. Existing users should verify: config_local.php and/or config/local.php - define $config['cops_kepubify_path'] if they want to use it
• 28.08.24: - Add kepubify tool to update metadata for Kobo - see mikespub-org/seblucas-cops#77
• 24.06.24: - Rebase to Alpine 3.20. Existing users should update their nginx confs to avoid http2 deprecation warnings.
• 07.05.24: - Existing users should verify: site-confs/default.conf - Fix rewriting rules default site conf.
• 20.03.24: - Rebase to Alpine 3.19.
• 25.12.23: - Existing users should update: site-confs/default.conf - Cleanup default site conf.
• 11.08.23: - Undeprecate and add new branch with mikespub fork which is actively maintained.
• 15.05.23: - Deprecate due to upstream dev abandonment of project.
• 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.