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			124 lines
		
	
	
		
			4.4 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
			
		
		
	
	
			124 lines
		
	
	
		
			4.4 KiB
		
	
	
	
		
			Markdown
		
	
	
	
	
	
[](https://github.com/docker/setup-buildx-action/releases/latest)
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[](https://github.com/marketplace/actions/docker-setup-buildx)
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[](https://github.com/docker/setup-buildx-action/actions?workflow=ci)
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[](https://github.com/docker/setup-buildx-action/actions?workflow=test)
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## About
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GitHub Action to set up Docker [Buildx](https://github.com/docker/buildx).
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___
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* [Usage](#usage)
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  * [Quick start](#quick-start)
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  * [With QEMU](#with-qemu)
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* [Customizing](#customizing)
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  * [inputs](#inputs)
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  * [outputs](#outputs)
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  * [environment variables](#environment-variables)
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* [Limitation](#limitation)
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## Usage
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### Quick start
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```yaml
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name: ci
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on:
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  push:
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jobs:
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  buildx:
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    runs-on: ubuntu-latest
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    steps:
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      -
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        name: Checkout
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        uses: actions/checkout@v2
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      -
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        name: Set up Docker Buildx
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        id: buildx
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        uses: docker/setup-buildx-action@v1
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        with:
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          version: latest
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      -
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        name: Builder instance name
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        run: echo ${{ steps.buildx.outputs.name }}
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      -
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        name: Available platforms
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        run: echo ${{ steps.buildx.outputs.platforms }}
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```
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### With QEMU
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If you want support for more platforms you can use our [setup-qemu](https://github.com/docker/setup-qemu-action) action:
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```yaml
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name: ci
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on:
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  pull_request:
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    branches: master
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  push:
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    branches: master
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    tags:
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jobs:
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  buildx:
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    runs-on: ubuntu-latest
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    steps:
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      -
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        name: Checkout
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        uses: actions/checkout@v2
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      -
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        name: Set up QEMU
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        uses: docker/setup-qemu-action@v1
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        with:
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          platforms: all
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      -
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        name: Set up Docker Buildx
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        id: buildx
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        uses: docker/setup-buildx-action@v1
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        with:
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          version: latest
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      -
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        name: Available platforms
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        run: echo ${{ steps.buildx.outputs.platforms }}
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```
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## Customizing
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### inputs
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Following inputs can be used as `step.with` keys
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| Name               | Type    | Default                           | Description                        |
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|--------------------|---------|-----------------------------------|------------------------------------|
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| `version`          | String  | _the one installed on the runner_ | [Buildx](https://github.com/docker/buildx) version. e.g. `v0.3.0`, `latest` |
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| `driver`           | String  | `docker-container`                | Sets the [builder driver](https://github.com/docker/buildx#--driver-driver) to be used. |
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| `driver-opt`       | String  |                                   | Passes additional [driver-specific options](https://github.com/docker/buildx#--driver-opt-options). e.g. `image=moby/buildkit:master` |
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| `buildkitd-flags`  | String  |                                   | [Flags for buildkitd](https://github.com/moby/buildkit/blob/master/docs/buildkitd.toml.md) daemon. |
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| `install`          | Bool    | `false`                           | Sets up `docker build` command as an alias to `docker buildx` |
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| `use`              | Bool    | `true`                            | Switch to this builder instance |
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### outputs
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Following outputs are available
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| Name          | Type    | Description                           |
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|---------------|---------|---------------------------------------|
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| `name`        | String  | Builder instance name |
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| `platforms`   | String  | Available platforms (comma separated) |
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### environment variables
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The following [official docker environment variables](https://docs.docker.com/engine/reference/commandline/cli/#environment-variables) are supported:
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| Name            | Type    | Default      | Description                                    |
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|-----------------|---------|-------------|-------------------------------------------------|
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| `DOCKER_CONFIG` | String  | `~/.docker` | The location of your client configuration files |
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## Limitation
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This action is only available for Linux [virtual environments](https://help.github.com/en/articles/virtual-environments-for-github-actions#supported-virtual-environments-and-hardware-resources).
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