initial commit

Author: dockeruser

Dockerfile

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+FROM node:alpine
+
+WORKDIR '/app'
+
+COPY package.json .
+RUN npm install
+COPY . .
+
+CMD ["npm", "start"]

docker-compose.yml

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+version: '3'
+
+services:
+  redis-server:
+    image: 'redis'
+  node-app:
+    restart: on-failure
+    build: .
+    ports: 
+      - "4001:8081"
+

index.js

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+const express = require('express');
+const redis = require('redis');
+
+const app = express();
+const client = redis.createClient({
+  host: 'redis-server',
+  port: 6379
+});
+client.set('visits', 0);
+
+app.get('/', (req, res) => {
+  client.get('visits', (err, visits) => {
+    res.send('Number of visits is: ' + visits);
+    client.set('visits', parseInt(visits) + 1);
+  });
+});
+
+app.listen(8081, () => {
+  console.log('Listening on port 8081');
+});

package.json

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+{
+  "dependencies": {
+    "express": "*",
+    "redis": "2.8.0"
+  },
+  "scripts": {
+    "start": "node index.js"
+  }
+}