Issue on step 33

[Vanylson]

On step 33 I'm getting a syntax error from the yaml code.

version: '3'
services:
  redis-server:
    image: 'redis'
  node-app:
    restart: always
    build: .
    ports:
      - "8080:8080"

## app.js
const client = redis.createClient({
  // add docker images
  host: 'redis-server',
  // default redis-server
  port: 6379
});

This is the output from executing the yaml file

[user@localhost Compose]$ sudo docker compose up -d
yaml: line 14: could not find expected ':'

Thank you for your time!