Build verified checkpoint containers for TrueNAS

.github/workflows/container.yml

@@ -0,0 +1,54 @@
+name: Verify and publish checkpoint container
+
+on:
+  push:
+    branches: [main, 'codex/**']
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  packages: write
+
+concurrency:
+  group: dune-checkpoint-container
+  cancel-in-progress: false
+
+jobs:
+  container:
+    runs-on: ubuntu-latest
+    timeout-minutes: 45
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-node@v4
+        with:
+          node-version: '22'
+          cache: npm
+      - run: npm ci
+      - uses: docker/setup-buildx-action@v3
+      - name: Build and run offline checks
+        uses: docker/build-push-action@v6
+        with:
+          context: .
+          load: true
+          tags: dune:verify
+          cache-from: type=gha
+          cache-to: type=gha,mode=max
+      - name: Verify isolated storage and HTTP behavior
+        run: node tools/verify-container.mjs dune:verify
+      - uses: docker/login-action@v3
+        if: github.ref == 'refs/heads/main'
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+      - name: Publish the verified image
+        if: github.ref == 'refs/heads/main'
+        env:
+          REPOSITORY: ${{ github.repository }}
+          REVISION: ${{ github.sha }}
+        run: |
+          image="ghcr.io/${REPOSITORY,,}"
+          docker tag dune:verify "$image:sha-$REVISION"
+          docker tag dune:verify "$image:checkpoint"
+          docker push "$image:sha-$REVISION"
+          docker push "$image:checkpoint"