Install Docker Community Edition from: https://www.docker.com/get-docker
$ docker pull kktech/firmware:v5-beta
The sources can be obtained from github:
$ git clone git@github.com:keepkey/keepkey-firmware.git
$ git submodule update --init --recursive
To build the firmware using the docker container, use the provided script:
$ ./scripts/build/docker/device/release.sh
If license is not specified in the header of a file, it can be assumed that it is licensed under GPLv3.