Multi-arch builds for goldpinger

Signed-off-by: Mike Tougeron <tougeron@adobe.com>

.github/workflows/publish.yml

@@ -0,0 +1,64 @@
+name: Publish
+
+on:
+  push:
+    # Publish `v*` tags as releases.
+    tags:
+    - v*
+  pull_request:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push'
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v3
+        with:
+          images: ${{ secrets.DOCKER_HUB_USERNAME }}/goldpinger
+      -
+        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
+        if: github.event_name != 'pull_request'
+        with:
+          username: ${{ secrets.DOCKER_HUB_USERNAME }}
+          password: ${{ secrets.DOCKER_HUB_TOKEN }}
+      -
+        name: Build and push
+        id: docker_build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          file: ./Dockerfile
+          build-args: GO_MOD_ACTION=download
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}
+          target: simple
+      -
+        name: Build and push vendor
+        id: docker_build_vendor
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          flavor: |
+            suffix: -vendor,onlatest=false
+          file: ./Dockerfile
+          build-args: GO_MOD_ACTION=vendor
+          platforms: linux/amd64,linux/arm64
+          push: ${{ github.event_name != 'pull_request' }}
+          tags: ${{ steps.docker_meta.outputs.tags }}
+          labels: ${{ steps.docker_meta.outputs.labels }}
+          target: vendor