Recv failure when I use docker-compose for set up redisDB - redis

Question

sorry but I'm new to redis and dockers and I'm getting stuck.
I want to connect redis to my localhost with docker-compose. When I use docker-compose my web and my redis shows that they are ON but when i try to make curl -L http://localhost:8081/ping for test it I get this message "curl: (56) Recv failure:"
I tryed to change my docker-compose.yaml but is not working
docker-compose:
version: '3'
services:
redis:
image: "redis:latest"
ports:
- "6379:6379"
web:
build: .
ports:
- "8081:6379"
environment:
REDIS_HOST: 0.0.0.0
REDIS_PORT: 6379
REDIS_PASSWORD: ""
depends_on:
- redis
Dockerfile
FROM python:3-onbuild
COPY requirements.txt requirements.txt
RUN pip3 install -r requirements.txt
CMD ["python", "main.py"]
My expected results are this:
curl -L http://localhost:8081/ping
pong
curl -L http://localhost:8081/redis-status
{"redis_connectivity": "OK"}