Get list of docker images, save, then load

docker-images.list

nginx:1.15
registry:2
python:3.7-stretch
node:8.12-jessie

get-docker-images.sh

#!/bin/bash

# pull images from internet
while read image; do docker pull "$image"; done <docker-images.list
docker images

# save to one big tar file
DATE=`date +%Y-%m-%d-%H%M%S`
docker save $(docker images -q) -o ./dockerimages-$DATE.tar
docker images | sed '1d' | awk '{print $1 " " $2 " " $3}' > dockerimages-$DATE.list

# remove images
#docker rmi -f $(docker images -a -q)
#docker images

# move tar and list to staging folder
mv ./dockerimages-* /staging-folder/

load-docker-images.sh

#!/bin/bash

# load from tar file to host images
docker load -i dockerimages-*.tar
docker images

# tag all images
while read REPOSITORY TAG IMAGE_ID
do
        echo "== Tagging $REPOSITORY $TAG $IMAGE_ID =="
        docker tag "$IMAGE_ID" "$REPOSITORY:$TAG"
done <  dockerimages*.list
docker images

rm dockerimages-*.tar