Pushing Image to Registry of Choice

[ucheNkadiCode]

When pushing an image, there is no option or prompt to push the image to a specific registry. Either the image is pushed to default or, in the case of Azure Container Registry, the user is required to tag their image rigidly (someusername.azurecr.io/someexpressapp:latest) to override the default registry selection. I believe it should be made easier for a user push an image tagged in any manner to their registry of choice.

This experience could be improved by having a "Push Default" and "Push to..." option. "Push Default" would behave just like the current push command. "Push to" would open a dialog to select which registry the user wants to use and optionally set a default.

[karolz-ms]

@ucheNkadiCode note that tagging the image before pushing it to a repository is how Docker works. In other words, tagging is an essential part of sharing an image via a repository. E.g. see https://docs.docker.com/engine/reference/commandline/tag/ (last paragraph of the topic).

Since a tag is always required, we need to think what Push to... operation would exactly entail. I.e. would it always involve creating new tag, or maybe allow the user to choose from a set of existing tags that point to external repositories?