ci: build multi-arch (amd64 + arm64) on native runners

.github/workflows/docker.yml

@@ -2,51 +2,22 @@ name: Docker
 on:
   workflow_dispatch:
   push:
-    branches: [main, dev, test]
     tags: ['v*']
 
 permissions:
   contents: read
   packages: write
 
+# Multi-arch (amd64 + arm64) on native lux ARC runners.
+# No QEMU emulation. No GitHub-hosted fallback.
+# Semver-only tags (v*); see hanzoai/.github docker-build.yml.
 jobs:
   docker:
-    runs-on: ubuntu-24.04
-    timeout-minutes: 45
-    steps:
-      - uses: actions/checkout@v4
-
-      - uses: docker/setup-qemu-action@v3
-
-      - uses: docker/setup-buildx-action@v3
-
-      - uses: docker/login-action@v3
-        with:
-          registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Compute tags
-        id: meta
-        run: |
-          set -eu
-          short_sha=$(git rev-parse --short HEAD)
-          ref_name="${GITHUB_REF_NAME}"
-          tags="ghcr.io/luxfi/indexer:${short_sha},ghcr.io/luxfi/indexer:${ref_name}"
-          if [ "${ref_name}" = "main" ]; then
-            tags="${tags},ghcr.io/luxfi/indexer:latest"
-          fi
-          echo "tags=${tags}" >> "$GITHUB_OUTPUT"
-          echo "sha=${short_sha}" >> "$GITHUB_OUTPUT"
-
-      - uses: docker/build-push-action@v6
-        with:
-          context: .
-          file: Dockerfile
-          push: true
-          platforms: linux/amd64
-          tags: ${{ steps.meta.outputs.tags }}
-          build-args: |
-            VERSION=${{ steps.meta.outputs.sha }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+    uses: hanzoai/.github/.github/workflows/docker-build.yml@main
+    with:
+      image: ghcr.io/luxfi/indexer
+      platforms: linux/amd64,linux/arm64
+      runner-amd64: lux-build-linux-amd64
+      runner-arm64: lux-build-linux-arm64
+      runner-deploy: lux-build-linux-amd64
+    secrets: inherit