A Redis container was started without a name. Start the web server properly, then fix the Redis name.

See what is running:

Start nginx in the background as web:

docker run -d --name web nginx:1.27

Count the characters of the ID it printed (docker ps shows only 12):

docker ps -q --no-trunc --filter name=web | tr -d '\n' | wc -c

Rename the Redis container. Use the generated name from docker ps:

docker rename <generated-name> cache

Run a one-off in the foreground under a name, so you can find it afterwards:

docker run --name stamp alpine:3.20 date
docker ps -a