enable docker layer caching

.github/workflows/docker-publish.yml

@@ -10,6 +10,7 @@ jobs:
     permissions:
       contents: read
       packages: write
+      id-token: write  # Required for using GitHub Actions cache
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
@@ -24,6 +25,17 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Cache Docker layers
+        uses: actions/cache@v3
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-docker-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-docker-
+
       - name: Build and push Docker image (latest tag)
         uses: docker/[email protected]
         with:
@@ -33,3 +45,5 @@ jobs:
           tags: ghcr.io/${{ github.repository }}:latest
           labels: |
             org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}
+          cache-from: type=gha
+          cache-to: type=gha,mode=max