Follow the below steps to export all docker images and import them to another system.
Step #1
Export or save all images to one tar file.
docker save $(docker images --format '{{.Repository}}:{{.Tag}}') -o allimages.tar
Step #2
scp -i key.pem rocky@192.168.1.1:/tmp/allimages.tar .
Step #3
Load all images to docker on new host.
docker load -i allimages.tar