Run server in docker container, added log file

src/main.rs

@@ -68,9 +68,15 @@ async fn main() -> Result<()> {
     dotenv().ok();
     let env_log_filter =
         env::var("RUST_LOG").unwrap_or_else(|_| "warp=info,bazaar_realm_api=info".to_owned());
+    let file_appender = tracing_appender::rolling::hourly(
+        env::var("LOG_DIR").unwrap_or_else(|_| ".".to_owned()),
+        "bazaarrealm.log",
+    );
+    let (non_blocking, _guard) = tracing_appender::non_blocking(file_appender);
     tracing_subscriber::fmt()
         .with_env_filter(env_log_filter)
         .with_span_events(FmtSpan::CLOSE)
+        .with_writer(non_blocking)
         .init();
 
     let host = env::var("HOST").expect("`HOST` environment variable not defined");