Error messages and guidance messages should be improved.

[swernli]

Right now, all exceptions from Docker.DotNet are just bubbled up to the PowerShell session, leading to some less than clear error messages (eg: Get-Container with no target daemon fails with "An error occurred while sending the request"). Some of these may require updates to Docker.DotNet to throw more specific errors, but in general the friendly error messages (with appropriate guidance) should be generated in the Docker.PowerShell code.

[jterry75]

It would be nice if we were forwarding the Docker daemon error's as extended info as well much like the docker cli does.