Improve usability of cmdlets by eliminating redundant parameters

[zionyx]

In the world of docker, the image name comprises of the full text that includes these elements:

1. registry (optional)
2. image name
3. tag / digest

As <registry>/<image name>/<tag / digest>.
Eg: docker.io/library/ubuntu:latest or just ubuntu:latest

But the parameters the cmdlets ask for, are 3 separate parameters as stated above.

To improve usability, I think we should let the users formulate the complete image names themselves, than to have this logic added in the cmdlets.

This will eliminate the need for 3 parameters, and streamline them into 1, similar to docker cli.

In docker tag scenario, it doubles the number of parameters.

Current scenario:

Invoke-DockerTag -Registry localregistry -ImageName myubuntu -Tag latest -NewRegistry localregistry -NewImageName myubuntu -NewTag rc1

Proposed scenario:

Invoke-DockerTag -ImageName localregistry/myubuntu:latest -NewImageName localregistry/myubuntu:rc1

In short, merge these parameters below into just -ImageName:

• -Registry
• -Tag