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7 changes: 7 additions & 0 deletions README.md
Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,7 @@ ___
* [Customizing](#customizing)
* [inputs](#inputs)
* [outputs](#outputs)
* [environment variables](#environment-variables)
* [`images` input](#images-input)
* [`flavor` input](#flavor-input)
* [`tags` input](#tags-input)
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| `json` | String | JSON output of tags and labels |
| `bake-file` | File | [Bake file definition](https://docs.docker.com/build/customize/bake/file-definition/) path |

### environment variables

| Name | Type | Description |
|-------------------------------|------|------------------------------------------------------------------------------------------------------------|
| `DOCKER_METADATA_PR_HEAD_SHA` | Bool | If `true`, set associated head SHA instead of commit SHA that triggered the workflow on pull request event |

## `images` input

`images` defines a list of Docker images to use as base name for [`tags`](#tags-input):
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