Fix clippy warnings

apps/container/src/db.rs

@@ -4,6 +4,7 @@ pub mod sqlite;
 
 use async_trait::async_trait;
 use shared::db_type::DBType;
+use std::error::Error;
 use std::future::Future;
 use std::{pin::Pin, sync::Arc};
 use url::Host;
@@ -55,5 +56,5 @@ pub trait DBInfo<T> {
     where
         Self: Sized;
     async fn get_db_container_config_info(&self) -> DBConfigInfoType;
-    fn get_unstarted_container(&self) -> Result<UnStartedContainer, ()>;
+    fn get_unstarted_container(&self) -> Result<UnStartedContainer, Box<dyn Error>>;
 }