Fix publish-dockerhub workflow

Signed-off-by: Elis Lulja <[email protected]>

Author: asimpleidea

.github/workflows/publish-dockerhub.yaml

@@ -3,9 +3,6 @@ on:
   release:
     types: [published]
 
-env:
-  IMAGE_NAME: kube-scraper-backend
-
 jobs:
   pushToDockerHub:
     name: Push Docker image to Docker Hub
@@ -28,7 +25,7 @@ jobs:
         uses: docker/build-push-action@v2
         with:
           push: true
-          tags: ${{ secrets.DOCKERHUB_USERNAME }}/$IMAGE_NAME:${{ github.event.release.tag_name }}
+          tags: asimpleidea/kube-scraper-backend:${{ github.event.release.tag_name }}
 
       - name: Image digest
         run: echo ${{ steps.docker_build.outputs.digest }}