Run-On-Arch GitHub Action

A GitHub Action that executes commands on non-x86 CPU architecture (armv6, armv7, aarch64, s390x, ppc64le).

Usage

This action requires three input parameters:

• arch

  : CPU architecture:

  armv6

  ,

  armv7

  ,

  aarch64

  ,

  s390x

  , or

  ppc64le

  . See Supported Platforms for the full matrix.

• distro

  : Linux distribution name:

  ubuntu16.04

  ,

  ubuntu18.04

  ,

  ubuntu20.04

  ,

  buster

  ,

  stretch

  ,

  jessie

  ,

  fedora_latest

  , or

  alpine_latest

  . See Supported Platforms for the full matrix.

• run

  : Shell commands to execute in the container.

The action also accepts some optional input parameters:

• githubToken

  : Your GitHub token, used for caching Docker images in your project's public package registry. Usually this would just be

  ${{ github.token }}

  . This speeds up subsequent builds and is highly recommended.

• env

  : Environment variables to propagate to the container. YAML, but must begin with a

  |

  character. These variables will be available in both run and setup.

• shell

  : The shell to run commands with in the container. Default:

  /bin/sh

  on Alpine,

  /bin/bash

  for other distros.

• dockerRunArgs

  : Additional arguments to pass to

  docker run

  , such as volume mappings. See

  docker run

  documentation.

• setup

  : Shell commands to execute on the host before running the container, such as creating directories for volume mappings.

• install

  : Shell commands to execute in the container as part of

  docker build

  , such as installing dependencies. This speeds up subsequent builds if

  githubToken

  is also used, but note that the image layer will be publicly available in your projects GitHub Package Registry, so make sure the resulting image does not have any secrets cached in logs or state.

Basic example

A basic example that sets an output variable for use in subsequent steps:

on: [push, pull_request]

jobs:
  armv7_job:
    # The host should always be Linux
    runs-on: ubuntu-18.04
    name: Build on ubuntu-18.04 armv7
    steps:
      - uses: actions/[email protected]
      - uses: uraimo/[email protected]
        name: Run commands
        id: runcmd
        with:
          arch: armv7
          distro: ubuntu18.04
      # Not required, but speeds up builds by storing container images in
      # a GitHub package registry.
      githubToken: ${{ github.token }}

      # Set an output parameter `uname` for use in subsequent steps
      run: |
        uname -a
        echo ::set-output name=uname::$(uname -a)

  - name: Get the output
    # Echo the `uname` output parameter from the `runcmd` step
    run: |
      echo "The uname output was ${{ steps.runcmd.outputs.uname }}"

Advanced example

This shows how to use a matrix to produce platform-specific artifacts, and includes example values for the optional input parameters

setup

shell

env

dockerRunArgs

on: [push, pull_request]

jobs:
  build_job:
    # The host should always be linux
    runs-on: ubuntu-18.04
    name: Build on ${{ matrix.distro }} ${{ matrix.arch }}
# Run steps on a matrix of 3 arch/distro combinations
strategy:
  matrix:
    include:
      - arch: aarch64
        distro: ubuntu18.04
      - arch: ppc64le
        distro: alpine_latest
      - arch: s390x
        distro: fedora_latest

steps:
  - uses: actions/[email protected]
  - uses: uraimo/[email protected]
    name: Build artifact
    id: build
    with:
      arch: ${{ matrix.arch }}
      distro: ${{ matrix.distro }}

      # Not required, but speeds up builds
      githubToken: ${{ github.token }}

      # Create an artifacts directory
      setup: |
        mkdir -p "${PWD}/artifacts"

      # Mount the artifacts directory as /artifacts in the container
      dockerRunArgs: |
        --volume "${PWD}/artifacts:/artifacts"

      # Pass some environment variables to the container
      env: | # YAML, but pipe character is necessary
        artifact_name: git-${{ matrix.distro }}_${{ matrix.arch }}

      # The shell to run commands with in the container
      shell: /bin/sh

      # Install some dependencies in the container. This speeds up builds if
      # you are also using githubToken. Any dependencies installed here will
      # be part of the container image that gets cached, so subsequent
      # builds don't have to re-install them. The image layer is cached
      # publicly in your project's package repository, so it is vital that
      # no secrets are present in the container state or logs.
      install: |
        case "${{ matrix.distro }}" in
          ubuntu*|jessie|stretch|buster)
            apt-get update -q -y
            apt-get install -q -y git
            ;;
          fedora*)
            dnf -y update
            dnf -y install git which
            ;;
          alpine*)
            apk update
            apk add git
            ;;
        esac

      # Produce a binary artifact and place it in the mounted volume
      run: |
        cp $(which git) "/artifacts/${artifact_name}"
        echo "Produced artifact at /artifacts/${artifact_name}"

  - name: Show the artifact
    # Items placed in /artifacts in the container will be in
    # ${PWD}/artifacts on the host.
    run: |
      ls -al "${PWD}/artifacts"

Supported Platforms

This table details the valid

arch

distro

| arch | distro | | -------- | ---------- | | armv6 | jessie, stretch, buster, alpinelatest | | armv7 | jessie, stretch, buster, ubuntu16.04, ubuntu18.04, ubuntu20.04, fedoralatest, alpinelatest | | aarch64 | stretch, buster, ubuntu16.04, ubuntu18.04, ubuntu20.04, fedoralatest, alpinelatest | | s390x | jessie, stretch, buster, ubuntu16.04, ubuntu18.04, ubuntu20.04, fedoralatest, alpinelatest | | ppc64le | jessie, stretch, buster, ubuntu16.04, ubuntu18.04,ubuntu20.04, fedoralatest, alpine_latest |

Using an invalid

arch

distro

Contributing

New distros and archs can be added simply by creating a Dockerfile named

Dockerfile.{arch}.{distro}

Authors

Umberto Raimondi

Elijah Shaw-Rutschman

License

This project is licensed under the BSD 3-Clause License.