Flatten docker image

flatten_image.sh

#!/bin/bash

# See: https://github.com/deis/deis/pull/1825

IMAGE=$1
NEW_IMAGE=$HOST:$PORT/$2:$3

NOW=$(date +"%m%d%Y%H%M%S")

if [ "$#" -ne 3 ]; then
  echo "Illegal number of parameters"
  exit 1
fi

echo "Exporting running image $IMAGE"
docker export $IMAGE | docker import - $NOW
echo "Creating tag for $NOW as $NEW_IMAGE"
docker tag $NOW $NEW_IMAGE
echo "Pushing new image to local registry"
docker push $NEW_IMAGE
echo "Removing temporal image $NOW"
docker rmi -f $NOW