update gh workflow

Author: Игорь Фонин

.github/workflows/ci.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Publish to Registry
         if: startsWith(github.ref, 'refs/tags/')
         run: |
-          docker build -t igorfonin/hoverfly .
+          docker build -t ${{ secrets.DOCKER_IMAGE_USER }}/hoverfly .
           docker tag ${{ secrets.DOCKER_IMAGE_USER }}/hoverfly ghcr.io/${{ secrets.DOCKER_IMAGE_USER }}/hoverfly:${GITHUB_REF:10}
           docker tag ${{ secrets.DOCKER_IMAGE_USER }}/hoverfly ghcr.io/${{ secrets.DOCKER_IMAGE_USER }}/hoverfly:latest
           docker login -u ${{ secrets.DOCKER_USER }} -p ${{ secrets.GH_TOKEN }} ghcr.io