ci: migrate to canonical docker-build reusable (#7)

- Add docker.yml using hanzoai/.github/.github/workflows/docker-build.yml@main
- Add workflow-sanity.yml to enforce canonical CI contract
- Remove bespoke docker build steps from existing workflows

Refs: hanzoai/.github canonical Docker CI contract.

.github/workflows/deploy.yml

@@ -1,63 +1,28 @@
 name: Deploy Docs
-
 on:
   push:
-    branches: [main]
-  workflow_dispatch:
-
+    branches:
+    - main
+  workflow_dispatch: null
 permissions:
   contents: read
   packages: write
   id-token: write
-
 concurrency:
   group: deploy-docs
   cancel-in-progress: true
-
 env:
   REGISTRY: ghcr.io
   IMAGE_NAME: luxfi/lux-docs
-
 jobs:
-  build-and-push:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Log in to GHCR
-        uses: docker/login-action@v3
-        with:
-          registry: ${{ env.REGISTRY }}
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Extract metadata
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
-          tags: |
-            type=raw,value=latest
-            type=sha
-
-      - name: Build and push
-        uses: docker/build-push-action@v6
-        with:
-          context: .
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          platforms: linux/amd64
-
   deploy:
     runs-on: ubuntu-latest
-    needs: build-and-push
     steps:
-      - name: Deploy to cluster
-        uses: appleboy/ssh-action@v1
-        with:
-          host: ${{ secrets.K8S_HOST }}
-          username: ${{ secrets.K8S_USER }}
-          key: ${{ secrets.K8S_SSH_KEY }}
-          script: |
-            kubectl rollout restart deployment/lux-docs -n lux-ns
+    - name: Deploy to cluster
+      uses: appleboy/ssh-action@v1
+      with:
+        host: ${{ secrets.K8S_HOST }}
+        username: ${{ secrets.K8S_USER }}
+        key: ${{ secrets.K8S_SSH_KEY }}
+        script: |
+          kubectl rollout restart deployment/lux-docs -n lux-ns

.github/workflows/docker.yml

@@ -0,0 +1,17 @@
+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/luxfi/docs
+    secrets: inherit

.github/workflows/workflow-sanity.yml

@@ -0,0 +1,9 @@
+name: Workflow Sanity
+on:
+  pull_request:
+  push:
+    branches: [main]
+
+jobs:
+  sanity:
+    uses: hanzoai/.github/.github/workflows/workflow-sanity.yml@main