Docker multi-platform publish

.github/workflows/docker_publish.yaml

@@ -13,6 +13,10 @@ jobs:
     steps:
       - name: Check out repo
         uses: actions/checkout@v2
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v1
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
       - name: cd
         run: |
           cd docker
@@ -23,4 +27,5 @@ jobs:
           password: ${{ secrets.DOCKER_PASSWORD }}
           repository: inventree/inventree
           tag_with_ref: true
-          dockerfile: ./Dockerfile
+          dockerfile: ./Dockerfile
+          platforms: linux/amd64,linux/arm64