Replace ID with Path on the container

Docker-DCO-1.1-Signed-off-by: Michael Crosby <michael@docker.com> (github: crosbymichael)

container.go

@@ -9,8 +9,8 @@ package libcontainer
 // be destroyed by a separate process, any function may return that the container
 // was not found.
 type Container interface {
-	// Returns the ID of this container.
-	ID() string
+	// Returns the path to the container which contains the state
+	Path() string
 
 	// Returns the current run state of the container.
 	//