[Markdown] is great for writing documentation or tutorials. However, executing the steps from a tutorial usually means to copy and paste the commands into a shell. There is no guarantee that the documentation is complete, and there is no protection against copy-and-paste errors.

This post shows how to use [Packer] for automatically executing code snippets from Markdown files on a variety of platforms. Machine images are created directly from the code snippets in the documentation. That way, documentation is guaranteed to be up-to-date and complete, and it can be integrated in an automated delivery pipeline.

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