From 6e3a340e23aab8e28f538a5f5b85ae3d2a8d7e1e Mon Sep 17 00:00:00 2001
From: Bill Church <billchurch@users.noreply.github.com>
Date: Fri, 29 Jul 2022 08:29:42 -0400
Subject: [PATCH] chore: add multiplatform support to docker builds

---
 .github/workflows/docker-multiplatform.yml | 64 ++++++++++++++++++++++
 1 file changed, 64 insertions(+)
 create mode 100644 .github/workflows/docker-multiplatform.yml

diff --git a/.github/workflows/docker-multiplatform.yml b/.github/workflows/docker-multiplatform.yml
new file mode 100644
index 0000000..ddb4e3e
--- /dev/null
+++ b/.github/workflows/docker-multiplatform.yml
@@ -0,0 +1,64 @@
+---
+name: 'build images'
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  docker:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Prepare
+        id: prep
+        run: |
+          DOCKER_IMAGE=${{ secrets.DOCKER_USERNAME }}/${GITHUB_REPOSITORY#*/}
+          VERSION=latest
+          SHORTREF=${GITHUB_SHA::8}
+
+          # If this is git tag, use the tag name as a docker tag
+          if [[ $GITHUB_REF == refs/tags/* ]]; then
+            VERSION=${GITHUB_REF#refs/tags/v}
+          fi
+          TAGS="${DOCKER_IMAGE}:${VERSION},${DOCKER_IMAGE}:${SHORTREF}"
+
+          # If the VERSION looks like a version number, assume that
+          # this is the most recent version of the image and also
+          # tag it 'latest'.
+          if [[ $VERSION =~ ^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$ ]]; then
+            TAGS="$TAGS,${DOCKER_IMAGE}:latest"
+          fi
+
+          # Set output parameters.
+          echo ::set-output name=tags::${TAGS}
+          echo ::set-output name=docker_image::${DOCKER_IMAGE}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@master
+        with:
+          platforms: all
+
+      - name: Set up Docker Buildx
+        id: buildx
+        uses: docker/setup-buildx-action@master
+
+      - name: Login to DockerHub
+        if: github.event_name != 'pull_request'
+        uses: docker/login-action@v1
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Build
+        uses: docker/build-push-action@v2
+        with:
+          builder: ${{ steps.buildx.outputs.name }}
+          context: .
+          file: ./Dockerfile
+          platforms: linux/amd64,linux/arm64,linux/ppc64le
+          push: true
+          tags: ${{ steps.prep.outputs.tags }}
\ No newline at end of file