The image is based on the IncludeOS releases. In order to use it, first pull the image:
docker pull kybeg/includeos-build
In order to use it, enter the directory with your IncludeOS makefile and run:
docker run --rm -v $(pwd):/tmp/seed kybeg/includeos-build
You can also streamline things, by making it into an alias:
alias includeos-build="docker run --rm -v \$(pwd):/tmp/seed kybeg/includeos-build"