Improved actions caching

Author: damianmoore

.github/workflows/docker-build.yml

@@ -47,5 +47,5 @@ jobs:
           platforms: linux/amd64,linux/arm/v7,linux/arm64
           push: true
           tags: ${{ steps.meta.outputs.tags }}
-          cache-from: type=registry,ref=photonixapp/photonix:latest
-          cache-to: type=inline
+          cache-from: type=gha
+          cache-to: type=gha,mode=max