ci/cd: Add registry as source to cache-from for buildx

.github/workflows/build-and-test.yml

@@ -8,7 +8,7 @@ on:
 env:
   IMAGE_NAME: localhost:5000/cdalvaro/docker-salt-master:ci
   REGISTRY_PATH: ${{ github.workspace }}/registry
-  CACHE_PATH: /tmp/.buildx-docker-salt-master-cache
+  CACHE_PATH: /tmp/.buildx-cache
 
 jobs:
   build:
@@ -44,7 +44,9 @@ jobs:
           context: .
           file: ./Dockerfile
           platforms: linux/amd64,linux/arm64
-          cache-from: type=local,src=${{ env.CACHE_PATH }}
+          cache-from: |
+            type=local,src=${{ env.CACHE_PATH }}
+            ghcr.io/cdalvaro/docker-salt-master:latest
           cache-to: type=local,dest=${{ env.CACHE_PATH }}
           push: true
           tags: ${{ env.IMAGE_NAME }}