feat(jstzd): implement async-drop for container

crates/jstzd/src/docker/container.rs

@@ -6,24 +6,14 @@ use bollard::Docker;
 use log::error;
 use std::sync::Arc;
 
+#[derive(Default)]
 pub struct Container {
     pub id: String,
     client: Option<Arc<Docker>>,
     dropped: bool,
     _private: (),
 }
 
-impl Default for Container {
-    fn default() -> Self {
-        Self {
-            id: String::new(),
-            client: None,
-            dropped: false,
-            _private: (),
-        }
-    }
-}
-
 impl Container {
     /// Creates a new container with running `id`
     pub(super) fn new(client: Arc<Docker>, id: String) -> Self {