migrate to "export default"

also, set no-use-before-define in linter

src/dockerproxy.js

@@ -5,20 +5,16 @@ import express from 'express';
 import debugModule from 'debug';
 import http from 'node:http';
 import { HttpError } from '@cloudron/connect-lastmile';
-import * as middleware from './middleware/index.js';
+import middleware from './middleware/index.js';
 import net from 'node:net';
 import path from 'node:path';
 import paths from './paths.js';
 import safe from 'safetydance';
 import util from 'node:util';
-import * as volumes from './volumes.js';
+import volumes from './volumes.js';
 
 const debug = debugModule('box:dockerproxy');
 
-export {
-    start,
-    stop
-};
 
 let gHttpServer = null;
 
@@ -191,3 +187,8 @@ async function stop() {
     await util.promisify(gHttpServer.close.bind(gHttpServer))();
     gHttpServer = null;
 }
+
+export default {
+    start,
+    stop
+};