GA quay.io deploy: cache container layers (#1768)

Author: mr-c

.github/workflows/quay-publish.yml

@@ -17,6 +17,13 @@ jobs:
         uses: docker/setup-qemu-action@v2
       - name: Set up Docker Buildx
         uses: docker/setup-buildx-action@v2
+      - name: Cache Docker layers
+        uses: actions/cache@v2
+        with:
+          path: /tmp/.buildx-cache
+          key: ${{ runner.os }}-multi-buildx-${{ github.sha }}
+          restore-keys: |
+            ${{ runner.os }}-multi-buildx
       - name: Login to Quay.io
         uses: docker/login-action@v2
         with: