chore: also build arm docker image on beta branch (#1948)

Author: zone117x

.github/workflows/ci.yml

@@ -930,7 +930,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: .
-          platforms: ${{ github.ref == 'refs/heads/master' && 'linux/amd64,linux/arm64' ||  'linux/amd64'  }}
+          platforms: ${{ (github.ref == 'refs/heads/master' || github.ref == 'refs/heads/beta') && 'linux/amd64,linux/arm64' || 'linux/amd64' }}
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
           # Only push if (there's a new release on main branch, or if building a non-main branch) and (Only run on non-PR events or only PRs that aren't from forks)