# Documentation question

**URL:** <https://community.okteto.com/t/documentation-question/847>\
**Category:** Not sure?\
**Created:** [June 2, 2023, 3:39pm UTC](https://community.okteto.com/t/documentation-question/847 "2023-06-02T15:39:11Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![boedy](https://sea1.discourse-cdn.com/flex019/user_avatar/community.okteto.com/boedy/32/388_2.png) [@boedy](https://community.okteto.com/u/boedy)\
**Post date:** [June 2, 2023, 3:39pm UTC](https://community.okteto.com/t/documentation-question/847/1 "2023-06-02T15:39:11Z")

</div>

The docs state:

> Okteto will automatically add all the build environment variables from all previous images in the dependency chain as build arguments. To refer to them, remember to add the `ARG` instruction on your Dockerfile.

[Source](https://www.okteto.com/docs/reference/manifest/#build-object-optional)

Can anyone explain what this means exactly? An example would be helpful.