Fix ghcr.io reference

Author: chriskinsman

.github/workflows/ci.yaml

@@ -4,7 +4,7 @@ on:
   pull_request:
     branches: main
 jobs:
-  buildx:
+  build:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -13,7 +13,7 @@ jobs:
         id: docker_meta
         uses: crazy-max/ghaction-docker-meta@v1
         with:
-          images: ${{ github.repository_owner }}/github-action-dashboard
+          images: ghcr.io/${{ github.repository_owner }}/github-action-dashboard
           tag-sha: true
           tag-edge: true
           tag-latest: true
@@ -44,7 +44,7 @@ jobs:
           push: ${{ github.event_name != 'pull_request' }}
           platforms: linux/amd64,linux/arm64
           tags: ${{ steps.docker_meta.outputs.tags }}
-          cache-from: type=registry,ref=${{ github.repository_owner }}/github-action-dashboard:edge
+          cache-from: type=registry,ref=ghcr.io/${{ github.repository_owner }}/github-action-dashboard:edge
           cache-to: type=inline
       - name: Image digest
         run: echo ${{ steps.docker_build.outputs.digest }} #this is for logging.