remove ipv6

src/index.ts

@@ -19,7 +19,7 @@ app.use('/v1/', server)
 app.use('/v1/', client)
 
 dbReady().then((e) => {
-  app.listen(port, () => {
+  app.listen(port, '0.0.0.0', () => {
     console.log(`Example app listening on port ${port}`)
   })
 })