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Docker Janus Node

This repository contains a Dockerfile and configuration file to build Janus Node, a privacy and compression proxy developed by Mozilla.

About Janus:

How to pull already built images?

If you don't want to build it, simply pull the image:

sudo docker pull matttbe/docker-janus-node

But this image will contain generic key and generic configuration. It's maybe better to build it by yourself!
Of course, it's always possible to pull this image and launch it with bash to update the system and change keys and certificate:

sudo docker run -u 0 -t -i -p -p -P --name janus matttbe/janus-node bash
apt-get update && apt-get dist-upgrade -y
su - janus
cd node-janus
vi config/default.yml
openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout keys/key.pem -out keys/crt.pem

How to build?

As previously said, it's maybe better to build it by yourself to be sure that you're using the latest stable version of all packages with your own key and certificate and with the options that you want.

Clone this repository:

 git clone
 cd docker-janus-node


If you need to change some settings, do it now by editing default.yml file (I just reduced the output messages compared to the original default.yml file).
Note that by default, cache aren't enabled.

Keys and certificate

You will need to add your own key and certificate. If you want to use yours, simply launch the script or:

openssl req -x509 -nodes -days 365 -newkey rsa:2048 -keyout key.pem -out crt.pem

The most important point is to correctly set the CD attribute with your server FQDN, e.g.

Common Name (e.g. server FQDN or YOUR name) []

Build docker image

Now you build the image by using script or:

sudo docker build -t matttbe/janus-node .

How to launch it?

You can simply launch it as any other docker image but don't forget to redirect ports, e.g.:

sudo docker run -d -p -p -P --name janus matttbe/janus-node

How to use it on Firefox

After having installed Janus Proxy Configurator module:

  • Open the configuration panel for this module, e.g.:
    • For Firefox for Android: Go to the top right menu: Tools / Additional Modules / Janus Proxy Configurator
    • For Firefox on GNU/Linux: Tools menu / Additional Modules / Janux Proxy Configurator
  • Change the PAC URL with the port of your PAC server, e.g.:
  • (Re)Enable the proxy
  • If you're using a self-signed certificate, always accept it by opening the address of your proxy server with the correct port, e.g.:
  • And... Voilà!
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