This docker image provides a multi arch kube-router image. The offical image does not provide arm64 support yet: cloudnativelabs/kube-router#503 This image uses the docker multi-stage build feature in order to reduce the image size.
In order to use this image instead of the offical image change the image setting in kubeadm-kuberouter-all-features.yaml from cloudnativelabs/kube-router to runningman84/kube-router