How to filter docker process based on image

Use "ancestor" instead of "image" that works great. Example:

sudo -S docker ps -q  --filter ancestor=docker-mariadb:1.0.1

The Docker team may have added it in the last versions: http://docs.docker.com/engine/reference/commandline/ps/

You can use awk and grep to filter specified container id. For example:

docker ps | grep "docker-mariadb:1.0.1" | awk '{ print $1 }'

This will print id of your container.