diff --git a/Dockerfile b/Dockerfile
index d2423de..09dbb99 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,4 +7,6 @@ WORKDIR /app
 
 COPY dist dist/
 
+EXPOSE 4100
+
 CMD [ "node", "./dist/apps/node-vless/main.js" ]
\ No newline at end of file
diff --git a/README.md b/README.md
index 8636472..f05bad8 100644
--- a/README.md
+++ b/README.md
@@ -42,6 +42,13 @@ https://blog.cloudflare.com/introducing-socket-workers/
 
 很多 Node.js 的平台都是支持 docker 的，所以可以直接部署原版。但是既然很多人要，我就写一个。我目前仅仅维护 render 平台的文档。理论上其他平台都一样。
 
+### Docker
+
+``` bash
+docker run -d -p 4600:4100 -e UUID=ce6d9073-7085-4cb1-a64d-382489a2af94 zizifn/node-vless:latest
+```
+> 如果你想让 DNS IPV4 优先， 请设置环境变量DNSORDER=ipv4first
+
 ### render.com
 
 [render](./doc/render.md)
diff --git a/apps/node-vless/src/main.ts b/apps/node-vless/src/main.ts
index 9b2a943..f387a94 100644
--- a/apps/node-vless/src/main.ts
+++ b/apps/node-vless/src/main.ts
@@ -254,6 +254,7 @@ async function connect2Remote(port, host, log: Function): Promise<Socket> {
       {
         port: port,
         host: host,
+        // https://github.com/nodejs/node/pull/46587
         // autoSelectFamily: true,
       },
       () => {