Change imagePullPolicy to Always

[SJrX]

Hi there,

I was going to recommend after #26 that you change the images to have a pull policy of Always, that way as you fix bugs users don't have to do a whole bunch of jumping around to get the new versions.

The caching semantics of the underlying image provider make even imagePullPolicy: Always efficient, as long as the registry is reliably accessible. Your container runtime can notice that the image layers already exist on the node so that they don't need to be downloaded again.

Source