Add PowerShell in Linux Docker image or container

Installs PowerShell engine in to Linux docker container or creates an image. In case of container usage execution ends up with PowerShell command processor opened inside specified Linux container - good for quick debug practices.

Command line parameters:

• Install-Docker-PWSH -Container [id] - for addition in to already running container
• Install-Docker-PWSH -SourceInmage [id] -TargetImage [name] - to create an output image with Docker engine includede