ci: add shared docker-build workflow (amd64+arm64)

Author: hanzo-dev

.github/workflows/docker.yml

@@ -0,0 +1,18 @@
+name: Docker
+
+on:
+  workflow_dispatch:
+  push:
+    branches: [main, dev, test]
+    tags: ['v*']
+
+permissions:
+  contents: read
+  packages: write
+
+jobs:
+  docker:
+    uses: hanzoai/.github/.github/workflows/docker-build.yml@main
+    with:
+      image: ghcr.io/zenlm/engine
+    secrets: inherit