Simple script for backup the volume if mongodb container

docker_dump_mongo_volume.sh

#!/bin/bash

DOCKER_MONGO_IMAGE=$1
OUT_FILE=$2
if [ $# -eq 2 ];then
  if echo $OUT_FILE |grep '.tar' ;then
    docker run --rm --volumes-from $DOCKER_MONGO_IMAGE -v $(pwd):/backup ubuntu tar cvf /backup/$OUT_FILE /data/db
  else
    echo "Invalid out_file: \"$OUT_FILE\". The out file require .tar extension!"
  fi
else
  echo "docker_image and out_file.tar is required"
fi