Add GitHub Actions workflow for multi-arch Docker build

.github/workflows/build.yml

@@ -0,0 +1,48 @@
+---
+name: Build and Push Multi-Arch Docker Image
+
+on:
+  push:
+    branches:
+      - multi-arch-docker-build
+  pull_request:
+    branches:
+      - multi-arch-docker-build
+
+env:
+  REGISTRY_IMAGE: mlenergy/zeus:master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        platform:
+          - linux/amd64
+          - linux/arm64
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v4
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v2
+
+      - name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+        with:
+          images: ${{ env.REGISTRY_IMAGE }}
+
+      - name: Build and push
+        uses: docker/build-push-action@v4
+        with:
+          context: .
+          platforms: ${{ matrix.platform }}
+          push: true
+          tags: ${{ steps.meta.outputs.tags }}
+          labels: ${{ steps.meta.outputs.labels }}