You can build a docker image for KUKSA.val server go to the root of your working copy and execute
docker build -f ./kuksa-val-server/docker/Dockerfile -t arm64/kuksa-val:myversion .
You can cross compile an image for other platforms such as arm64 using dockers buildx feature. To set up buildx check the official documentation https://docs.docker.com/buildx/working-with-buildx/.
If you have a running buildx setup you can create an arm64 image using
docker buildx build --platform=linux/arm64 -f ./kuksa-val-server/docker/Dockerfile -t arm64/kuksa-val:myversion .Not optimized at all, just gets Ubuntu installed and does compile KUKSA Server. When run it will start KUKSA Server with default configuration.
To build go to kuksa.val directory and do
docker build -f ./kuksa-val-server/docker/Dockerfile.dev -t kuksavaltest .