add redis to docker-compose.yml

config/socket.io.js

@@ -12,7 +12,7 @@ module.exports = function (app, db) {
 
 	var io = socketio(config.socketPort, { transports: ['websocket', 'polling'] });
 	var redis = require('socket.io-redis');
-	io.adapter(redis({ host: '127.0.0.1', port: 6379 }));
+	io.adapter(redis(process.env.REDIS_HOST || { host: '127.0.0.1', port: 6379 }));
 
 	// Add an event listener to the 'connection' event
 	io.on('connection', function (socket) {

docker-compose.yml

@@ -7,6 +7,9 @@ services:
       - "27017:27017"
     volumes:
       - mongo-data-wt:/data/db
+  redis:
+    image: redis
+
   web:
     build: .
     volumes:
@@ -17,8 +20,10 @@ services:
       - "35729:35729"
     links:
       - db
+      - redis
     environment:
         DB_HOST: db
+        REDIS_HOST: redis
 volumes:
   mongo-data-wt:
     driver: local