Creating Winodws Base Image using Dockers

Hi, I am New to dockers. I use windows environment to test my applications as my applications are developed on Microsoft Technologies. My primary question is after installing docker on my physical box (Windows 8.1) it is executing a Docker-Host (linux vm), so how can create a base image for my windows environment and install my prerequisites on that image like .NetFramwork,Oracle Client etc … Please clarify me and let me know the steps to follow …