added basic node server

Dockerfile

@@ -0,0 +1,8 @@
+FROM node:10-alpine
+
+
+EXPOSE 5000
+COPY . /app 
+WORKDIR /app 
+
+CMD node server.js

README.md

@@ -5,6 +5,7 @@ colorFrom: pink
 colorTo: red
 sdk: docker
 pinned: false
+app_port: 5000
 ---
 
 Check out the configuration reference at https://huggingface.co/docs/hub/spaces-config-reference

server.js

@@ -0,0 +1,12 @@
+var http = require("http");
+
+var server = http.createServer(function (req,res){
+    res.writeHead(200,{"context-type":"text/html"})
+    res.write("<h1>Hello Everyone</h1>");
+    res.end();
+});
+
+var port=5000;
+server.listen(port);
+console.log(server)
+console.log("Node server started at port "+port);