Creating a container from a tar file created on a vm
From MyWiki
In the vm create a tar file
tar -cpzf backup.tar.gz --exclude=/backup.tar.gz --exclude=/proc --exclude=/tmp --exclude=/mnt --exclude=/dev --exclude=/sys /
Then use the docker import command
cat exampleimage.tar.gz | docker import --message "New image imported from tarball" - myimage:v1