packer-cn/website/source/docs/post-processors/docker-save.html.markdown

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---
layout: "docs"
page_title: "docker-save Post-Processor"
---
# Docker Save Post-Processor
Type: `docker-save`
The Docker Save post-processor takes an artifact from the
[docker builder](/docs/builders/docker.html) that was committed
and saves it to a file. This is similar to exporting the Docker image
directly from the builder, except that it preserves the hierarchy of
images and metadata.
We understand the terminology can be a bit confusing, but we've
adopted the terminology from Docker, so if you're familiar with that, then
you'll be familiar with this and vice versa.
## Configuration
The configuration for this post-processor is extremely simple.
* `path` (string) - The path to save the image.
## Example
An example is shown below, showing only the post-processor configuration:
<pre class="prettyprint">
{
"type": "docker-save",
"path": "foo.tar"
}
</pre>