deal with lowercase requirement

Author: seanauff

.github/workflows/build-multiarch.yml

@@ -41,5 +41,5 @@ jobs:
           platforms: linux/amd64,linux/arm/v7,linux/arm64
           push: ${{ github.event_name != 'pull_request' }}  # Only push on push, not PR
           tags: |
-            ghcr.io/${{ github.repository }}:latest
-            ghcr.io/${{ github.repository }}:${{ github.sha }}
+            ghcr.io/seanauff/wol-proxy:latest
+            ghcr.io/seanauff/wol-proxy:${{ github.sha }}