One liner to stop / remove all of Docker containers:
docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)
Remove only stopped containers can be listed using:
docker rm $(docker ps -f "status=exited")
Remove all dangling images
docker rmi $(docker images --filter "dangling=true" -q --no-trunc)
Remove conatiners of specific image
docker rm $(docker stop $(docker ps -a -q --filter ancestor="image-name" --format="{{.ID}}"))