mirror of
https://github.com/docker/setup-buildx-action.git
synced 2025-11-04 06:34:19 +08:00
179 lines
6.4 KiB
Markdown
179 lines
6.4 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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[](https://codecov.io/gh/docker/setup-buildx-action)
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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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This action will create and boot a builder that can be used in the following steps of your workflow if you're using
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[buildx](https://github.com/docker/buildx). By default, the `docker-container` [builder driver](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#driver)
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will be used to be able to build multi-platform images and export cache thanks to the [BuildKit](https://github.com/moby/buildkit)
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container.
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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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* [Install by default](#install-by-default)
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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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* [Keep up-to-date with GitHub Dependabot](#keep-up-to-date-with-github-dependabot)
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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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-
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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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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 QEMU
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uses: docker/setup-qemu-action@v1
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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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-
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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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### Install by default
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Implemented with https://github.com/docker/buildx#setting-buildx-as-default-builder-in-docker-1903
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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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uses: docker/setup-buildx-action@v1
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id: buildx
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with:
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install: true
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-
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name: Build
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run: |
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docker build . # will run buildx
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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 | Description |
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|--------------------|---------|-----------------------------------|
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| `version` | String | [Buildx](https://github.com/docker/buildx) version. (eg. `v0.3.0`, `latest`) |
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| `driver` | String | Sets the [builder driver](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#driver) to be used (default `docker-container`) |
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| `driver-opts` | CSV | List of additional [driver-specific options](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#driver-opt) (eg. `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 (since [buildx v0.3.0](https://github.com/docker/buildx/releases/tag/v0.3.0)) |
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| `install` | Bool | Sets up `docker build` command as an alias to `docker buildx` (default `false`) |
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| `use` | Bool | Switch to this builder instance (default `true`) |
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| `endpoint` | String | [Optional address for docker socket](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#description) or context from `docker context ls` |
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> `CSV` type must be a newline-delimited string
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> ```yaml
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> driver-opts: image=moby/buildkit:master
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> ```
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> ```yaml
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> driver-opts: |
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> image=moby/buildkit:master
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> network=host
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> ```
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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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## Keep up-to-date with GitHub Dependabot
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Since [Dependabot](https://docs.github.com/en/github/administering-a-repository/keeping-your-actions-up-to-date-with-github-dependabot)
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has [native GitHub Actions support](https://docs.github.com/en/github/administering-a-repository/configuration-options-for-dependency-updates#package-ecosystem),
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to enable it on your GitHub repo all you need to do is add the `.github/dependabot.yml` file:
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```yaml
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version: 2
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updates:
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# Maintain dependencies for GitHub Actions
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- package-ecosystem: "github-actions"
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directory: "/"
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schedule:
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interval: "daily"
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```
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## Limitation
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This action is only available for Linux [virtual environments](https://docs.github.com/en/actions/reference/virtual-environments-for-github-hosted-runners#supported-virtual-environments-and-hardware-resources).
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