imagePullPolicy support

[jiria]

Has there been a consideration to enable imagePullPolicy? I could see that an application operator might want to always deploy the latest image with a specific tag.

[wonderflow]

I think we should support imagePullPolicy. In k8s, we usually rely on this mechanism to pre-allocate images, then we can avoid busy network traffic at the same time when Application started.

[technosophos]

Do platforms other than Kubernetes have this concept?

[wonderflow]

@technosophos I think this also could be useful for other platforms. In the spec, we use OCI format image, then they will have the image update concept.

[technosophos]

How do we want to expose it? And can anyone from a project other than Kubernetes confirm/deny that this is a standard practice for them?

[jiria]

I looked at Azure Service Fabric docs and cannot find anything particular, but I am no expert on SF. @suhuruli, do you know of a similar concept on SF?