set up arm build

Author: joshma-openai

.github/workflows/build-image.yml

@@ -3,6 +3,8 @@ name: Build image
 on:
   push:
     branches: [ "main" ]
+  pull_request:
+    branches: [ "main" ]
 
 permissions:
   contents: read
@@ -24,25 +26,36 @@ jobs:
       id-token: write
     steps:
     - uses: actions/checkout@v4
+    - name: Set up Docker
+      uses: docker/setup-docker-action@v4
+      with:
+        daemon-config: |
+          {
+            "debug": true,
+            "features": {
+              "containerd-snapshotter": true
+            }
+          }
     - name: Log in to ghcr.io
       uses: docker/login-action@65b78e6e13532edd9afa3aa52ac7964289d1a9c1
       with:
         registry: ${{ env.REGISTRY }}
         username: ${{ github.actor }}
         password: ${{ secrets.GITHUB_TOKEN }}
-    - name: Set up Docker Buildx
-      uses: docker/setup-buildx-action@v3
+    - name: Set up QEMU
+      uses: docker/setup-qemu-action@v3
     - name: Build and push
       id: docker_build
       uses: docker/build-push-action@v6
       with:
-        push: true
+        platforms: linux/amd64,linux/arm64
+        push: ${{ github.event_name == 'push' }}
         tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
         cache-from: type=gha
         cache-to: type=gha,mode=max
     - name: Generate artifact attestation
       uses: actions/attest-build-provenance@v2
       with:
-        push-to-registry: true
+        push-to-registry: ${{ github.event_name == 'push' }}
         subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
         subject-digest: ${{ steps.docker_build.outputs.digest }}