test(docker): verify the built Docker image with testcontainers

.github/workflows/test.yml

@@ -108,3 +108,14 @@ jobs:
       - name: Inspect
         run: |
           docker buildx imagetools inspect localhost:5000/vivliostyle/cli:latest
+      - name: Pull the built image into the Docker daemon
+        run: docker pull localhost:5000/vivliostyle/cli:latest
+      - uses: actions/setup-node@v4
+        with:
+          node-version-file: .nvmrc
+          cache: pnpm
+      - run: pnpm install
+      - name: Run the image tests
+        run: pnpm test:docker
+        env:
+          VIVLIOSTYLE_CLI_IMAGE: localhost:5000/vivliostyle/cli:latest

package.json

@@ -13,7 +13,8 @@
     "generate:browser-versions": "node scripts/update-default-browser-versions.ts",
     "clean": "shx rm -rf dist tmp",
     "dev": "tsdown --watch src",
-    "test": "vitest run --coverage",
+    "test": "vitest run --coverage --exclude=**/docker-image.test.ts",
+    "test:docker": "vitest run tests/docker-image.test.ts",
     "lint": "oxlint",
     "lint:fix": "oxlint --fix",
     "fmt": "oxfmt",
@@ -127,6 +128,7 @@
     "pnpm": "10.28.2",
     "shx": "0.4.0",
     "supertest": "7.2.2",
+    "testcontainers": "12.0.4",
     "tsdown": "0.22.3",
     "tsx": "4.22.4",
     "typedoc": "0.28.19",