A. docker stack builds the images locally and copies them to only those Swarm nodes which run the service.
B. docker stack passes the images to the Swarm master which distributes the images to all other Swarm nodes.
C. docker stack instructs the Swarm nodes to pull the images from a registry, although it does not upload the images to the registry.
D. docker stack transfers the image from its local Docker cache to each Swarm node.
E. docker stack triggers the build process for the images on all nodes of the Swarm.
