Mac上清理Docker.qcow2文件的脚本

Docker.qcow2越来越大了，平时docker用的不多，来自谷歌搜索，如下：

#!/bin/bash
# Copyright 2017 Théo Chamley
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in the Software
# without restriction, including without limitation the rights to use, copy, modify, merge,
# publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
# to whom the Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in all copies or
# substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
# BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

echo "This will remove all your current containers and images except for:"
echo ${IMAGES}
read -p "Are you sure? [yes/NO] " -n 1 -r
echo # (optional) move to a new line

if [[ ! $REPLY =~ ^[Yy]$ ]]
  then
  exit 1
fi

TMP_DIR=$(mktemp -d)
pushd $TMP_DIR >/dev/null
open -a Docker
echo "=> Saving the specified images"
for image in ${IMAGES}; do
  echo "==> Saving ${image}"
  tar=$(echo -n ${image} | base64)
  docker save -o ${tar}.tar ${image}
  echo "==> Done."
done

echo "=> Cleaning up"
echo -n "==> Quiting Docker"

osascript -e 'quit app "Docker"'

while docker info >/dev/null 2>&1; do
  echo -n "."
  sleep 1
done;

echo ""
echo "==> Removing Docker.qcow2 file"

rm ~/Library/Containers/com.docker.docker/Data/com.docker.driver.amd64-linux/Docker.qcow2
echo "==> Launching Docker"
open -a Docker
echo -n "==> Waiting for Docker to start"
  until docker info >/dev/null 2>&1; do
  echo -n "."
  sleep 1
done;
echo ""
echo "=> Done."
echo "=> Loading saved images"
for image in ${IMAGES}; do
  echo "==> Loading ${image}"
  tar=$(echo -n ${image} | base64)
  docker load -q -i ${tar}.tar || exit 1
  echo "==> Done."
done
popd >/dev/null
rm -r ${TMP_DIR}