Multi environment support

[wbreza]

Update CI/CD to support multiple environments and establish baseline for application environment promotion.

Dev > Test > Staging > Production

What needs to happen in between?

• Integration tests?
• Manual approval gates?
• Canary or blue/green rollout?

[markweitzel]

Need to define what needs to happen between the steps.
Add Rollback support.

[savannahostrowski]

cc: @ellismg for your proposal

[rajeshkamal5050]

@ellismg @savannahostrowski

The new environment proposal does not support promoting applications through various environment stages (test, dev, prod). Currently there isn't any requirement to support that in azd by mapping it to how target hosts support for the same ex: Azure App Service Slots.

Keeping it in backlog. Please adjust if you think otherwise.

[pamelafox]

To clarify: is there any way to deploy to a slot right now in App Service? I've been asked by the community a few times about blue/green deployment, and am looking into whether that can be an AZD demo or whether AZ CLI still needed.
This article describes what I'm looking for: https://www.willvelida.com/posts/blue-green-deployments-app-service-containers

[savannahostrowski]

AFAIK we don't support deployment slots at this time (@rajeshkamal5050 correct me if I'm wrong and this has slipped by me).

We do want to enable this scenario though. We don't currently have it on the roadmap as we are tackling a lot of other features/fixes but I will put this in the Gallium milestone for investigation next semester.