image source changed to dockerhub

.github/workflows/build_image.yml

@@ -7,9 +7,6 @@ jobs:
   publish-server-image:
     name: Publish 'waka-readme-stats' image
     runs-on: ubuntu-latest
-    permissions:
-      contents: read
-      packages: write
 
     steps:
       - name: Checkout 🛎️
@@ -19,14 +16,14 @@ jobs:
         uses: docker/login-action@v2
         with:
           registry: ghcr.io
-          username: ${{ github.actor }}
-          password: ${{ secrets.GITHUB_TOKEN }}
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Extract metadata (tags, labels) for Docker 🏋️
         id: meta
         uses: docker/metadata-action@v4
         with:
-          images: ghcr.io/${{ github.repository }}
+          images: waka-readme-stats
           tags: |
             type=ref,event=branch
             type=ref,event=pr