How to set up a Docker redis container with ssl

I'm following this tutorial.

In my case I am operating in a Docker environment, and I have a secured site (i.e. https://localhost). which requires secured ssl communication.

I adjusted the web, and celery containers for secure connection.
But I don't know how to configure the Redis container for secure connection with ssl
Note that when I run without ssl connection in the web and celery containers, the connection is fine.

How do I configure and run redis with ssl?

Thanks

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EDIT:

I followed this tutorial to set redis with ssl and this tutorial to set redis with ssl via stunnel in Docker container.

I successfully tested the connection from my localhost to the redis docker container, by invoking redis-cli from localhost (via stunnel) to the redis docker container, using the following call from the localhost:

redis-cli -h 127.0.0.1 -p 6381
127.0.0.1:6381> auth foobared
OK
127.0.0.1:6381> 

Related files on the redis server Docker side:

docker-compose file (my webapp includes multiple services, but to for simplification I removed all services except for the redis container):

version: '3'

services:
  redis:
    build:
      context: ./redis
      dockerfile: Dockerfile
    restart: always
    command: sh -c "stunnel /stunnel_take2.conf && /usr/local/bin/redis-server /etc/redis/redis.conf"
    expose:
      - '6379'
    ports:
     - "6379:6379"
    volumes:
      - /home/avner/avner/certs:/etc/certs
      - /home/avner/avner/redis/conf:/etc/redis

redis container Dockerfile

FROM redis:5-alpine

RUN apk add --no-cache \
    stunnel~=5.56 \
    python3~=3.8

COPY stunnel-redis-server.conf /

WORKDIR /

ENV PYTHONUNBUFFERED=1

redis server redis conf file - redis/conf/redis.conf

...
requirepass foobared
...

redis server stunnel conf file - redis/stunnel-redis-server.conf

cert = /etc/certs/private.pem
pid = /var/run/stunnel.pid

[redis]
accept = 172.19.0.2:6380
connect = 127.0.0.1:6379

Related files on the client side (localhost):

redis client stunnel conf file - /etc/stunnel/redis-client.conf

cert = /etc/cert/private.pem
client = yes
pid = /var/run/stunnel.pid
[redis]
accept = 127.0.0.1:6381
connect = 172.19.0.2:6380

Redis doesn't provide SSL by itself, you have to do it yourself. There's an in-depth post about it which you can read and follow. Or, if you want to use a Dockerized solution, you can use ready images like this one or this one. When it comes to setting up Celery to work with Redis over SSL, just follow the documentation.