A few quick bash one-liners to export/save import/load docker containers/images

gistfile1.md

NOTE: make sure you export containers and images in separate directories or it's very likely there will be issues when importing or loading your backups using the following snippets

Export all containers

$ while read image container_id; do 
    docker export $container_id > ${image////_}-${container_id}.tar 
  done < <(docker ps -a -f status=exited | tail -n +2 | awk '{ print $2 " " $1 }')

Import containers (as versioned images)

$ for file in *.tar; do
    eval `echo $file | sed -nr 's;([a-zA-Z0-9\.-]+)_([a-zA-Z0-9-]+)-([a-f0-9]+)\.tar;IMAGE=\1/\2\nVERSION=\3;pg'
    cat $file | docker import - ${IMAGE}:${VERSION} 
  done

Save all images

$ while read image version image_id; do 
    docker save $image_id > ${image////_}-${version}-${image_id}.tar
  done < <(docker images| tail -n +2 | grep -v '<none>' | awk '{ print $1 " " $2 " " $3 }')

Load all images

$ for image in *.tar; do docker load < $image; done

For the "Export all containers" I needed to replace ${image////_} with ${image//\//_}, i.e. escape the to-be-replaced slash.
However, these scripts are very helpful to me! Thanks a lot!