#!/bin/bash
host_backup_folder_path="$HOME/Backup/docker/"
docker_backup_folder_path="/Backup/docker/"
mkdir -p "$host_backup_folder_path"
for docker_container_name in $(docker ps --format '{{.Names}}');
do
  backup_dir_base_path="$docker_backup_folder_path""archive/$(date '+%Y%m%d%H%M%S')/";
  echo "stop container: $docker_container_name" && docker stop "$docker_container_name"
  for rsync_source_path in $(docker inspect --format '{{ range .Mounts }}{{ if eq .Type "volume" }}{{ println .Destination }}{{ end }}{{ end }}' "$docker_container_name");
  do
    rsync_docker_destination_path="$docker_backup_folder_path""latest/""$docker_container_name$rsync_source_path";
    rsync_docker_backup_dir_path="$backup_dir_base_path$docker_container_name$rsync_source_path";
    echo "backup $rsync_source_path..."
    docker run --rm --volumes-from "$docker_container_name" -v "$host_backup_folder_path:$docker_backup_folder_path" "kevinveenbirkenbach/alpine-rsync" sh -c "
    test -d $rsync_source_path &&
    mkdir -p $rsync_docker_destination_path &&
    rsync -a --delete $rsync_source_path $rsync_docker_destination_path ||
    mkdir -p $(dirname $rsync_docker_destination_path) &&
    rsync -a --delete $rsync_source_path $(dirname $rsync_docker_destination_path)";
  done
  echo "start container: $docker_container_name" && docker start "$docker_container_name"
done