try to cache QEMU image

.gitea/workflows/docker-build.yaml

@@ -9,8 +9,6 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
-    volumes:
-        - /opt/hostedtoolcache:/opt/hostedtoolcache
     steps:
       - name: Checkout code
         uses: actions/checkout@v6
@@ -22,6 +20,8 @@ jobs:
       - run: npm run build --if-present
       - name: Installs QEMU binaries for multi-platform emulation.
         uses: docker/setup-qemu-action@v4
+        with:
+          cache-image: true
       - name: Generates image tags and annotations from Git information.
         id: meta
         uses: docker/metadata-action@v6