hardcode Docker Hub username in workflow instead of using secret

Author: raahulrahl

.github/workflows/build-and-push.yml

@@ -28,7 +28,7 @@ jobs:
       - name: Log in to Docker Hub
         uses: docker/login-action@v3
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          username: raahulrahl
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push versioned image