GitHub action for automatic multiarch Docker build (#1613)

* Create docker-build-and-push.yml

* Switched to using official Docker buildx action

* Added comment to docker-build-and-push.yml
In case something needs to be tweaked in the future, the link
contains some examples and explanations which would be useful

* Run only on release (and produce release tags)

As this workflow takes quite a lot of time, and [pushing to master happens frequently](https://github.com/matrix-org/dendrite/pull/1613#issuecomment-746086980), the container will now only be built when a release is created, and the builds will also be correctly tagged.

* Add latest tag, test at neilalexander/dendrite*

Co-authored-by: Neil Alexander <neilalexander@users.noreply.github.com>
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TR_SLimey 2021-01-18 10:23:53 +00:00 committed by GitHub
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# Based on https://github.com/docker/build-push-action
name: "Docker Multiarch Build & Push"
on:
release:
# types: [published]
branches: [master]
env:
DOCKER_HUB_USER: neilalexander
jobs:
BuildAndPush:
runs-on: ubuntu-latest
steps:
-
name: Checkout
uses: actions/checkout@v2
-
name: Get release tag
run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
-
name: Set up QEMU
uses: docker/setup-qemu-action@v1
-
name: Set up Docker Buildx
uses: docker/setup-buildx-action@v1
-
name: Login to DockerHub
uses: docker/login-action@v1
with:
username: ${{ env.DOCKER_HUB_USER }}
password: ${{ secrets.DOCKER_TOKEN }}
-
name: Build temporary (builder) image
id: docker_build_temporary
uses: docker/build-push-action@v2
with:
context: .
file: ./build/docker/Dockerfile
platforms: linux/amd64,linux/arm64,linux/arm/v7
push: false
tags: ${{ env.DOCKER_HUB_USER }}/dendrite:latest
-
name: Build monolith image
id: docker_build_monolith
uses: docker/build-push-action@v2
with:
context: .
file: ./build/docker/Dockerfile.monolith
platforms: linux/amd64,linux/arm64,linux/arm/v7
push: true
tags: |
${{ env.DOCKER_HUB_USER }}/dendrite-monolith:latest
${{ env.DOCKER_HUB_USER }}/dendrite-monolith:${{ env.RELEASE_VERSION }}
-
name: Build polylith image
id: docker_build_polylith
uses: docker/build-push-action@v2
with:
context: .
file: ./build/docker/Dockerfile.polylith
platforms: linux/amd64,linux/arm64,linux/arm/v7
push: true
tags: |
${{ env.DOCKER_HUB_USER }}/dendrite-polylith:latest
${{ env.DOCKER_HUB_USER }}/dendrite-polylith:${{ env.RELEASE_VERSION }}
-
name: Image digest
run: |
echo Monolith ( ${{ env.RELEASE_VERSION }} ) image digest - ${{ steps.docker_build_monolith.outputs.digest }}
echo Polylith ( ${{ env.RELEASE_VERSION }} ) image digest - ${{ steps.docker_build_polylith.outputs.digest }}