Docker with Redis via Procfile.dev in iTerm2 output is unreadable

Question

This is a bit of a strange one and I can't find answers anywhere else... if I have a Procfile.dev file with a basic Redis command in it such as redis: docker run --rm -it -p 6379:6379 redis:latest and run it via bin/dev the output from the Redis ascii art makes the logs unreable. If I remove the Redis command from the Procfile.dev it goes back to being neat and readable, below is an example of the messed up output:

Does anyone know how to make this look nice? I'm having to run docker outside the procfile atm because of this.

This is a Ruby on Rails 7 app running via bin/dev, if that is relevant.

Answer 1

If possible try running the docker container in non interactive mode:

redis: docker run --rm -p 6379:6379 redis:latest

Note the removal of the -it flag.

It will cause redis to not output the logo ascii art.

The reasoning behind the solution are the comments defined for the configuration property always-show-logo that you can see in redis.conf:

# By default Redis shows an ASCII art logo only when started to log to the
# standard output and if the standard output is a TTY and syslog logging is
# disabled. Basically this means that normally a logo is displayed only in
# interactive sessions.

Similar issues has been reported for the service, like this one related to syslog.