adaugat lab4 si lab5

Signed-off-by: hellisabove <robertnedela15@gmail.com>

lab5/node_app/Dockerfile

@@ -0,0 +1,10 @@
+FROM node:21-alpine3.18
+
+COPY package.json /
+RUN npm install
+
+COPY server.js /usr/src/app/
+
+EXPOSE 8080
+
+CMD ["node", "/usr/src/app/server.js"]

lab5/node_app/package.json

@@ -0,0 +1,12 @@
+{
+  "name": "docker_web_app",
+  "version": "1.0.0",
+  "description": "Node.js on Docker",
+  "main": "server.js",
+  "scripts": {
+    "start": "node server.js"
+  },
+  "dependencies": {
+    "express": "^4.16.1"
+  }
+}

lab5/node_app/server.js

@@ -0,0 +1,14 @@
+'use strict';
+
+const express = require('express');
+
+const PORT = 8080;
+const HOST = '0.0.0.0';
+
+const app = express();
+app.get('/', (req, res) => {
+  res.send('Hello World');
+});
+
+app.listen(PORT, HOST);
+console.log(`Running on http://${HOST}:${PORT}`);