fix: github actions deploy docker hub

.github/workflows/docker-image.yml

@@ -7,6 +7,8 @@ on:
     branches: [ "dev", "main" ]
 
 env:
+  # Use docker.io for Docker Hub if empty
+  REGISTRY: docker.io
   # github.repository as <account>/<repo>
   IMAGE_NAME: ${{ github.repository }}
 
@@ -46,12 +48,13 @@ jobs:
         id: meta
         uses: docker/metadata-action@v5
         with:
-          images: ${{ env.IMAGE_NAME }}
+          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v5
         with:
           context: .
+          dockerfile: Dockerfile
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}