Remove all non running containers: docker rm $(docker ps -a -f="status=exited" -q)
see also Docker filtering
Remove unused images docker rmi $(docker images --filter "dangling=true" -q --no-trunc)
(but check link for more)
Get list IP of all running containers docker inspect -f '{{.Name}} - {{.NetworkSettings.IPAddress }}' $(docker ps -aq)
(StackOverflow answer)
One liner to stop / remove all of Docker containers:
docker stop $(docker ps -a -q)
docker rm $(docker ps -a -q)
From this S.Overflow answer
Export image
docker save -o <save image to path> <image name>
Import image
docker load -i <path to image tar file>