docker-as-a-psuedo-vm.sh

#!/bin/sh
VMNAME=myvm
IMAGE_TAR=image.tar.gz
IMAGE=image:orig
NEW_IMAGE=image:new
docker import $IMAGE_TAR $IMAGE
docker create --privileged --name=$VMNAME --restart=unless-stopped -v $HOME:/home/user -p 5000:80 $IMAGE /sbin/init
docker start $VMNAME

docker exec -ti -u user $VMNAME env TERM=$TERM /bin/bash

docker stop $VMNAME
docker export $VMNAME | gzip -c > NEW_IMAGE.tar.gz

docker commit $VMNAME $NEW_IMAGE
docker rm $VMNAME

docker save $NEW_IMAGE | gzip -c > NEW_IMAGE.tar.gz