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Last pushed: 18 hours ago
Short Description
A Quassel core container, brought to you by
Full Description

The team brings you another container release featuring easy user mapping and community support. Find us for support at:

  • IRC on freenode at
  • Podcast covers everything to do with getting the most from your Linux Server plus a focus on all things Docker and containerisation!


Quassel IRC is a modern, cross-platform, distributed IRC client, meaning that one (or multiple) client(s) can attach to and detach from a central core.

This container handles the IRC connection (quasselcore) and requires a desktop client (quasselclient) to be used and configured. It is designed to be always on and will keep your identity present in IRC even when your clients cannot be online. Backlog (history) is downloaded by your client upon reconnection allowing infinite scrollback through time.


docker create \
    --name=quassel-core \
    -v /etc/localtime:/etc/localtime:ro \
    -v <path to data>:/config \
    -e PGID=<gid> -e PUID=<uid> \
    -p 4242:4242 \


The parameters are split into two halves, separated by a colon, the left hand side representing the host and the right the container side. For example with a port -p external:internal - what this shows is the port mapping from internal to external of the container. So -p 8080:80 would expose port 80 from inside the container to be accessible from the host's IP on port 8080 http://192.168.x.x:8080 would show you what's running INSIDE the container on port 80.

  • -p 4242 - the port quassel-core listens for connections on
  • -v /etc/localtime for timesync - optional
  • -v /config - database and quassel-core configuration storage
  • -e PGID for for GroupID - see below for explanation
  • -e PUID for for UserID - see below for explanation

It is based on alpine linux with s6 overlay, for shell access whilst the container is running do docker exec -it quassel-core /bin/bash.

User / Group Identifiers

Sometimes when using data 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 the data volume directory on the host is owned by the same user you specify and it will "just work" ™.

In this instance PUID=1001 and PGID=1001. To find yours use id user as below:

  $ id <dockeruser>
    uid=1001(dockeruser) gid=1001(dockergroup) groups=1001(dockergroup)

Setting up the application

Quassel wiki: quassel

A great place to host a quassel instance is a VPS, such as DigitalOcean. For $5 a month you can have a 24/7 IRC connection and be up and running in under 55 seconds (or so they claim).

Once you have the container running, fire up a quassel desktop client and connect to your new core instance using your droplets public IP address and the port you specified in your docker run command default: 4242. Create an admin user, select SQLite as your storage backend (Quassel limitation). Setup your real name and nick, then press Save & Connect.

You're now connected to IRC. Let's add you to our IRC room on Freenode. Click 'File' > 'Networks' > 'Configure Networks' > 'Add' (under Networks section, not Servers) > 'Use preset' > Select 'Freenode' and then configure your identity using the tabs in the 'Network details' section. Once connected to Freenode, click #join and enter That's it, you're done.


Monitor the logs of the container in realtime docker logs -f quassel-core.

  • container version number

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

  • image version number

docker inspect -f '{{ index .Config.Labels "build_version" }}' linuxserver/quassel-core


  • 03.01.18: Deprecate cpu_core routine lack of scaling.
  • 09.12.17: Rebase to alpine:3.7.
  • 26.11.17: Use cpu core counting routine to speed up build time.
  • 12.07.17: Add inspect commands to README, move to jenkins build and push.
  • 27.05.17: Rebase to alpine:3.6.
  • 13.05.17: Switch to git source.
  • 28.12.16: Rebase to alpine:3.5.
  • 23.11.16: Rebase to alpine:edge.
  • 23.09.16: Use QT5 dependencies (thanks bauerj).
  • 10.09.16: Add layer badges to README.
  • 28.08.16: Add badges to README.
  • 10.08.16: Rebase to xenial
  • 14.10.15: Removed the webui, turned out to be to unstable for most usecases.
  • 01.09.15: Fixed mistake in README
  • 30.07.15: Switched to internal baseimage, and fixed a bug with updating the webinterface.
  • 06.07.15: Enabled BLOWFISH encryption and added a (optional) webinterface, for the times you dont have access to your client.
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