Send Docker Compose Volumes to a different host

migrate-docker-compose-volumes.sh

#!/bin/bash

# It's best to do ssh-copy-id to the destination before running this script
# This script takes 3 params:
# The first is the prefix for the volume names, usually it's the docker compose dir name without special chars
# Second is the user@host ssh location
# Third optional: Replace the original prefix with a different prefix on the destrination

docker volume ls --format "{{.Name}}" | grep "^${1}" | while read vol
do
  if [ -z "${3}" ]
  then
    dest_vol="$vol"
  else
    dest_vol="${vol/${1}/${3}}"
  fi
  docker run --rm -v ${vol}:/from alpine ash -c "cd /from ; tar -cf - . " | ssh "${2}" 'docker run --rm -i -v '"${dest_vol}"':/to alpine ash -c "cd /to ; tar -xpvf - " '
done