setup-qemu-action/README.md

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[![GitHub release](https://img.shields.io/github/release/docker/setup-qemu-action.svg?style=flat-square)](https://github.com/docker/setup-qemu-action/releases/latest)
[![GitHub marketplace](https://img.shields.io/badge/marketplace-docker--setup--qemu-blue?logo=github&style=flat-square)](https://github.com/marketplace/actions/docker-setup-qemu)
[![CI workflow](https://img.shields.io/github/workflow/status/docker/setup-qemu-action/ci?label=ci&logo=github&style=flat-square)](https://github.com/docker/setup-qemu-action/actions?workflow=ci)
## About
GitHub Action to install [QEMU static binaries](https://github.com/multiarch/qemu-user-static).
![Screenshot](.github/setup-qemu-action.png)
___
* [Usage](#usage)
* [Customizing](#customizing)
* [inputs](#inputs)
* [Limitation](#limitation)
## Usage
```yaml
name: ci
on:
push:
jobs:
qemu:
runs-on: ubuntu-latest
steps:
-
name: Checkout
uses: actions/checkout@v2
-
name: Set up QEMU
id: qemu
uses: docker/setup-qemu-action@v1
with:
image: tonistiigi/binfmt:latest
platforms: all
-
name: Available platforms
run: echo ${{ steps.qemu.outputs.platforms }}
```
## Customizing
### inputs
Following inputs can be used as `step.with` keys
| Name | Type | Default | Description |
|------------------|---------|-----------------------------|------------------------------------|
| `image` | String | `tonistiigi/binfmt:latest` | QEMU static binaries Docker image (e.g. [`tonistiigi/binfmt:latest`](https://hub.docker.com/r/tonistiigi/binfmt/tags)) |
| `platforms` | String | `all` | Platforms to install (e.g. `arm64,riscv64,arm`) |
### outputs
Following outputs are available
| Name | Type | Description |
|---------------|---------|---------------------------------------|
| `platforms` | String | Available platforms (comma separated) |
## Limitation
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).