Try again to workaround docker/buildx#395

.github/workflows/ci.yml

@@ -361,19 +361,41 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
-      - name: Build and push (alpine)
-        uses: docker/build-push-action@v3
+      # Work around https://github.com/docker/buildx/issues/395
+      # - name: create small fs for docker cache
+      #   run: |
+      #     df -h
+      #     sudo swapon --show
+      #     sudo dd if=/dev/zero of=/swapfile1 bs=1M count=6K
+      #     sudo chmod 600 /swapfile1
+      #     sudo mkswap /swapfile1
+      #     sudo swapon /swapfile1
+      #     sudo swapon --show
+      #     sudo free -h
+      #     sudo systemctl stop docker
+      #     sudo mount -t tmpfs -o size=9G tmpfs /var/lib/docker
+      #     df -h
+      #     sudo systemctl start docker
+      - name: Run Docker on tmpfs
+        uses: JonasAlfredsson/docker-on-tmpfs@v1
         with:
-          context: .
-          platforms: |
-            linux/arm64
-            linux/amd64
-          push: true
-          file: Dockerfile.alpine
-          tags: ${{ steps.meta-alpine.outputs.tags }}
-          labels: ${{ steps.meta-alpine.outputs.labels }}
-          cache-from: type=gha
-          cache-to: type=gha,mode=max
+          tmpfs_size: 5
+          swap_size: 4
+
+      # - name: Build and push (alpine)
+      #   uses: docker/build-push-action@v3
+      #   with:
+      #     context: .
+      #     platforms: |
+      #       linux/arm64
+      #       linux/amd64
+      #     push: true
+      #     file: Dockerfile.alpine
+      #     tags: ${{ steps.meta-alpine.outputs.tags }}
+      #     labels: ${{ steps.meta-alpine.outputs.labels }}
+      #     cache-from: type=gha
+      #     cache-to: type=gha,mode=max
+
       - name: Build and push
         uses: docker/build-push-action@v3
         with: