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Ubooquity is a free, lightweight and easy-to-use home server for your comics and ebooks. Use it to access your files from anywhere, with a tablet, an e-reader, a phone or a computer.

Supported Architectures

Our images support multiple architectures such as x86-64, arm64 and armhf. We utilise the docker manifest for multi-platform awareness. More information is available from docker here and our announcement here.

Simply pulling 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:









Application Setup

IMPORTANT Ubooquity has now been upgraded to version 2 and for existing v1.x users we recommend cleaning your appdata and reinstalling, due to changes in the application itself making the two versions essentially incompatible with each other. Also the admin page and library pages are now on separate ports as detailed below.

Access the admin page at http://<your-ip>:2203/ubooquity/admin and set a password.

Then you can access the webui at http://<your-ip>:2202/ubooquity/

This container will automatically scan your files at startup.


The quantity of memory allocated to Ubooquity depends on the hardware your are running it on. If this quantity is too small, you might sometime saturate it with when performing memory intensive operations. That’s when you get java.lang.OutOfMemoryError: Java heap space errors.

You can explicitly set the amount of memory Ubooquity is allowed to use (be careful to set a value lower than the actual physical memory of your hardware). Value is a number of megabytes ( put just a number, without MB )

If no value is set it will default to 512MB.


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

version: "2.1"
container_name: ubooquity
- PUID=1000
- PGID=1000
- TZ=Europe/London
- MAXMEM=<maxmem>
- <path to data>:/config
- <path to books>:/books
- <path to comics>:/comics
- <path to raw files>:/files
- 2202:2202
- 2203:2203
restart: unless-stopped

docker run -d \
--name=ubooquity \
-e PUID=1000 \
-e PGID=1000 \
-e TZ=Europe/London \
-e MAXMEM=<maxmem> \
-p 2202:2202 \
-p 2203:2203 \
-v <path to data>:/config \
-v <path to books>:/books \
-v <path to comics>:/comics \
-v <path to raw files>:/files \
--restart unless-stopped \


Docker 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.

Ports (-p)




The library port.


The admin port.

Environment Variables (-e)




for UserID - see below for explanation


for GroupID - see below for explanation


Specify a timezone to use EG Europe/London.


To set the maximum memory. ( ex: set '1024' for 1GB )

Volume Mappings (-v)




Config files and database for ubooquity.


Location of books.


Location of comics.


Location of raw files.

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

Docker Mods Docker Universal 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 ubooquity /bin/bash

  • To monitor the logs of the container in realtime:

    • docker logs -f ubooquity

  • Container version number

    • docker inspect -f '{{ index .Config.Labels "build_version" }}' ubooquity

  • Image version number

    • docker inspect -f '{{ index .Config.Labels "build_version" }}'


  • 23.01.21: - Rebasing to alpine 3.13.

  • 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.

  • 22.02.19: - Rebasing to alpine 3.9.

  • 28.01.19: - Add pipeline logic and multi arch.

  • 15.10.18: - Upgrade to Ubooquity 2.1.2.

  • 23.08.18: - Rebase to alpine 3.8.

  • 09.12.17: - Rebase to alpine 3.7.

  • 07.10.17: - Upgrade to Ubooquity 2.1.1.

  • 16.07.17: - Upgrade to Ubooquity 2.1.0, see setting up application section for important info for existing v1.x users.

  • 26.05.17: - Rebase to alpine 3.6.

  • 08.04.17: - Switch to java from 3.5 repo, fixes login crashes.

  • 06.02.17: - Rebase to alpine 3.5.

  • 06.12.16: - Initial Release.