Using Docker in a Hyper-V image can be that easy – if you know how to do that. The use case is quite simple: imagine you have a company or private infrastructure that runs on a server. This server runs multiple instances of Windows (Server) where one instance is used for developing and another for testing. Now if the assignement is to create a Docker image that runs your application than you might have the same problems that I had – I didn’t work on a fast try. So here is the short and simple solution of a few hours of trying and searching.

Preferences Hyper-V Host

1. Start Hyper-V-Manager
2. Write down name of the image that should run Docker for Windows
3. Download the following script
   https://github.com/MicrosoftDocs/Virtualization-Documentation/blob/live/hyperv-tools/Nested/Enable-NestedVm.ps1
4. Open powershell as Administrator
5. Execute script

powershell -ExecutionPolicy Bypass -File .\Enable-NestedVm.ps1 {Hyper-V-image-name-that-should-run-Docker}

Explaination
-ExecutionPolicy Bypass: by default, no one is allowed to execute unsigned scripts, so bypass this setting. Just try it out without this parameter and you will see the response.
-File: the file to execute

Preferences Hyper-V Image

1. Enable Windows Features
   + Containers
   + Hyper-V
2. Download
   https://docs.docker.com/docker-for-windows/install/
3. Install Docker
4. Concratulation, you successfully installed Docker in a Hyper-V image!