start to use sqlite

src/main.rs

@@ -15,7 +15,7 @@ async fn main() {
     let net_name = String::from("customnetwork");
     let net_range = String::from("172.20.0.0/24");
 
-    match network_docker::Network::create_network(docker.clone(), net_name, net_range).await {
+    match network_docker::Network::new(docker.clone(), net_name, net_range).await {
         Ok(_n)=> println!("va"),
         Err(e)=> println!("err: {}", e),
     };