update build-rc.yml

.github/workflows/build-rc.yml

@@ -31,6 +31,7 @@ jobs:
           --platform linux/amd64 \
           --load \
           --cache-from=type=registry,ref=$CACHE_REF \
+          --cache-to=type=registry,ref=$CACHE_REF,mode=max \
           --file ./docker/Dockerfile .
 
     - name: Get SemVer