Add --prune to stack deploy.

Add to command line reference.

Signed-off-by: Daniel Nephin <dnephin@docker.com>
Upstream-commit: 644fd804fce63499812259331b0a9f2a4a3ebcc4
Component: engine

components/engine/cli/command/stack/deploy_bundlefile.go

@@ -21,6 +21,14 @@ func deployBundle(ctx context.Context, dockerCli *command.DockerCli, opts deploy
 
 	namespace := convert.NewNamespace(opts.namespace)
 
+	if opts.prune {
+		services := map[string]struct{}{}
+		for service := range bundle.Services {
+			services[service] = struct{}{}
+		}
+		pruneServices(ctx, dockerCli, namespace, services)
+	}
+
 	networks := make(map[string]types.NetworkCreate)
 	for _, service := range bundle.Services {
 		for _, networkName := range service.Networks {