Debian Web Runtime Demo

Prerequisites

Before building the system, you need to install Docker on the build host. For example, on Ubuntu Linux:

sudo apt install docker.io

Make sure you have the required permissions to start containers. See the Docker post-installation steps

Building Images

Invoke the configuration menu to select the desired image configuration and start the build:

./kas-container menu

After the build is complete, the final target image will be located under:

build/tmp/deploy/images/<board>/

Known issues

Some distributions use AppArmor and in some cases AppArmor user namespace creation restrictions cause our platform build to fail with permission errors. This happens at least on Ubuntu 24.04 and Ubuntu 25.04.

If you encounter this issue, apply the following workaround:

Temporary solution

sudo sysctl -w kernel.apparmor_restrict_unprivileged_userns=0

To make it permanent

echo 'kernel.apparmor_restrict_unprivileged_userns = 0' | sudo tee /etc/sysctl.d/20-apparmor-donotrestrict.conf