I'm struggling to connect a redis deployment to my nodejs app. Of course locally without the use of docker, it works well, so I'm at odds as to whether this is an issue to do with my code, or the way I've set up my docker pose file

Dockerfile:

FROM node:8
WORKDIR /app
COPY package.json /app
COPY . /app
RUN npm install
CMD ["npm", "start"]
EXPOSE 3000

I'm struggling to connect a redis deployment to my nodejs app. Of course locally without the use of docker, it works well, so I'm at odds as to whether this is an issue to do with my code, or the way I've set up my docker pose file

Dockerfile:

FROM node:8
WORKDIR /app
COPY package.json /app
COPY . /app
RUN npm install
CMD ["npm", "start"]
EXPOSE 3000

docker-pose.yml

version: "3"
services:
  web:
    container_name: web-container
    restart: always
    depends_on:
      - redis
    build: . 
    ports: 
    - "3000:3000"
    links: 
      - redis
  redis:
    container_name: redis-container
    image: "redis:latest"
    ports:
      - "6379:6379"
    volumes:
      - ./data:/data

Redis Connection File (RedisService.js)

const redis         = require("redis");
const client        = redis.createClient();
const DbUtils       = require("../../db_utils");
const {promisify}   = require("util");
const getAsync      = promisify(client.get).bind(client);
const existsAsync   = promisify(client.exists).bind(client);

class RedisCache {
    constructor () {
        var connected;
        // * Initiliase the connection to redis server
        client.on("connect", () => {console.log("