NOTE: Anything passed to DockerService should be eventually handled in another way when we switch to running the shim as a different process.

DockerImageIDPrefix is the prefix of image id in container status.

DockerPullableImageIDPrefix is the prefix of pullable image id in container status.

NetworkPluginArgs is the subset of kubelet runtime args we pass to the container runtime shim so it can probe for network plugins.

DockerLegacyService is an interface that embeds all legacy methods for backward compatibility.

DockerService is an interface that embeds both the new RuntimeService and ImageService interfaces, while including DockerLegacyService for backward compatibility.