Update Hostname for DB

src/main.rs

@@ -123,7 +123,7 @@ fn main() -> Result<(), io::Error> {
 fn read_from_db(config: HashMap<String, String>, mut predictor: SetPredictor) -> SetPredictor {
     let default_password = &String::from("");
     let db_password = config.get("db_password").unwrap_or(default_password);
-    let mut client = Client::connect(format!("host=localhost user=metager password={} dbname=postgres",db_password).as_str(), NoTls);
+    let mut client = Client::connect(format!("host=database-postgresql.metager-2 user=metager password={} dbname=postgres",db_password).as_str(), NoTls);