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update multistep documentation

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Matthew Hooker 2018-01-24 17:27:08 -08:00
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website/source/docs/extending/custom-builders.html.md
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@ -82,11 +82,11 @@ And `packer.Cache` is used to store files between multiple Packer runs, and is
covered in more detail in the cache section below.
Because builder runs are typically a complex set of many steps, the
[multistep](https://github.com/mitchellh/multistep) library is recommended to
bring order to the complexity. Multistep is a library which allows you to
separate your logic into multiple distinct "steps" and string them together. It
fully supports cancellation mid-step and so on. Please check it out, it is how
the built-in builders are all implemented.
[multistep](https://github.com/hashicorp/packer/blob/master/helper/multistep)
helper is recommended to bring order to the complexity. Multistep is a library
which allows you to separate your logic into multiple distinct "steps" and
string them together. It fully supports cancellation mid-step and so on. Please
check it out, it is how the built-in builders are all implemented.
Finally, as a result of `Run`, an implementation of `packer.Artifact` should be
returned. More details on creating a `packer.Artifact` are covered in the