Implementing Docker-Compose

visits/Dockerfile

@@ -0,0 +1,9 @@
+FROM node:alpine
+
+WORKDIR '/app'
+
+COPY package.json .
+RUN npm install
+COPY . .
+
+CMD ["npm" , "start"]

visits/docker-compose.yml

@@ -0,0 +1,10 @@
+version: '3'
+
+services: 
+    redis-server:
+        image: 'redis'
+    node-app:
+        restart: on-failure
+        build: .
+        ports: 
+            - "4001:8081"

visits/index.js

@@ -0,0 +1,22 @@
+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, (params) => {
+    console.log('Lisitng on Port 8081')
+})

visits/package.json

@@ -0,0 +1,9 @@
+{
+    "dependencies": {
+        "express":"*",
+        "redis":"2.8.0"
+    },
+    "scripts": {
+        "start": "node index.js"
+    }
+}