add qemu setup for arm build

The ARM image build complains of a qemu script not being present. It
seems that qemu is required for `docker buildx` to work.

Signed-off-by: Blaine Gardner <blaine.gardner@redhat.com>

.github/workflows/image-build.yml

@@ -44,6 +44,9 @@ jobs:
       - name: Check out code into the Go module directory
         uses: actions/checkout@v2
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1
 

.github/workflows/image-push-master.yml

@@ -59,4 +59,24 @@ jobs:
           push: true
           tags: ghcr.io/${{ github.repository }}:latest-ocp
           file: Dockerfile.openshift
-          platforms: linux/arm64
+
+  push-arm64:
+    name: Image build/arm64
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v2
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+
+      - name: Build container image
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+          push: false
+          tags: ghcr.io/${{ github.repository }}:latest-arm64
+          file: Dockerfile.arm64

.github/workflows/image-push-release.yml

@@ -48,6 +48,9 @@ jobs:
       - name: Check out code into the Go module directory
         uses: actions/checkout@v2
 
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v1