Make Registries extensible (support custom registries)

[chrisdias]

The Registries node should be extensible in that someone can write an extension that provides support for Azure, AWS, or whatever they like. This includes the browsing of the registries plus any deployment if they so desire.

Azure support then moves to a "Docker Azure" extension and the user of the Docker extension can install/enable it separately.

[YvanGuidoin]

I uninstalled the extension as soon as I have seen the forced push to the Azure crap, I know it's a Microsoft software, but please keep it clean, add Azure support in another package, not as a dependency you can't get rid of.

[chrisdias]

@YvanGuidoin I should have an update out today, see #149

[YvanGuidoin]

@chrisdias Thanks a lot

[chrisdias]

@YvanGuidoin i've updated the extension to not have a hard dependency on the Azure Account extension. I'll work on making it pluggable over the next few weeks.

[phil-harmoniq]

@chrisdias Any updates on this? It would be pretty neat to have support for custom registries. 😄

[chrisdias]

@phil-harmoniq i made some good progress before the holidays in the chrisdias/extensions branch. The Azure extension then extends the Docker extension. Still lots of work to do, but it is a start.

[fiveisprime]

I'd also like to work with a custom registry. What's the status on this?

[tjespers]

@chrisdias any updates on this 😄 ?