ci: add support for building arm64 image

.github/workflows/build.yml

@@ -3,8 +3,11 @@ name: Create and publish a Docker image
 # Configures this workflow to run every time a change is pushed to the branch called `release`.
 on:
   push:
-    branches: ['master']
-    tags: [ 'v*' ]
+    branches:
+      - master
+      - ci**
+    tags:
+      - v*
 
 # Defines two custom environment variables for the workflow. These are used for the Container registry domain, and a name for the Docker image that this workflow builds.
 env:
@@ -26,6 +29,8 @@ jobs:
       - name: Set up QEMU
         uses: docker/setup-qemu-action@v3
       # Uses the `docker/login-action` action to log in to the Container registry registry using the account and password that will publish the packages. Once published, the packages are scoped to the account defined here.
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
       - name: Log in to the Container registry
         uses: docker/login-action@v3
         with: