first commit, a first app with docker

.gitignore

@@ -0,0 +1,3 @@
+node_modules
+.idea
+.vs

Dockerfile

@@ -0,0 +1,10 @@
+FROM node:8-alpine
+
+WORKDIR /usr/app
+
+ADD . /usr/app
+RUN npm install --quiet
+
+EXPOSE 8080
+
+CMD ["npm", "start"]

package.json

@@ -0,0 +1,11 @@
+{
+  "name": "docker-node-application",
+  "version": "1.0.0",
+  "scripts": {
+    "start": "node server/server.js"
+  },
+  "dependencies": {
+    "express": "^4.15.2"
+  }
+}
+

server/server.js

@@ -0,0 +1,17 @@
+'use strict';
+
+const express = require('express');
+
+// Constants
+const PORT = 8080;
+const HOST = '0.0.0.0';
+
+// App
+const app = express();
+const host = process.env.HOSTNAME || '0.0.0.0';
+app.get('/', (req, res) => {
+  res.send(`<h1>Hello world!!</h1><p>${host}</p>`);
+});
+
+app.listen(PORT, HOST);
+console.log(`Running on http://${HOST}:${PORT}`);