Django + React + Regis - Find BUG in my code to run in DOCKER -- 3

Hi, I'm trying to run my React + Django + Regis with docker and I'm having an error. It works outside of docker but when in docker it doesn't work

Note: I'm using django channels to use chat functionality which requires regis to run

What does work?
- Able to connect to http://localhost to access frontend
- Able to connect to http://localhost:8000 to access backend

What doesn't work?
- WebSocket connection to 'ws://127.0.0.1:8000/ws/chat/undefined/' failed:

I think this has to do with regis not running/setup properly inside the docker containers, because when running it outside of docker it works perfectly by starting regis this way

docker run -p 6379:6379 -d redis:5

https://channels.readthedocs.io/en/stable/tutorial/part_2.html


Django Settings.py

CHANNEL_LAYERS = {
'default': {
'BACKEND': 'channels_redis.core.RedisChannelLayer',
'CONFIG': {
"hosts": [('redis', 6379)],
},
},
}