feat: spawn docker updates into own thread

Collects spawns into a hashmap, then on next update if spawn exists in hash map, don't bother to run another update

src/docker_data/message.rs

@@ -6,4 +6,5 @@ pub enum DockerMessage {
     Pause(String),
     Unpause(String),
     Stop(String),
+    Quit,
 }