fix: docker auth

Author: arielweinberger

.github/workflows/ci.yml

@@ -43,11 +43,10 @@ jobs:
             type=sha,format=short
 
       - name: Log in to Docker Hub
-        if: ${{ secrets.DOCKERHUB_USERNAME && secrets.DOCKERHUB_TOKEN }}
         uses: docker/login-action@v3
         with:
-          username: ${{ secrets.DOCKERHUB_USERNAME }}
-          password: ${{ secrets.DOCKERHUB_TOKEN }}
+            username: ${{ vars.DOCKERHUB_USERNAME }}
+            password: ${{ secrets.DOCKERHUB_TOKEN }}
 
       - name: Build and push Docker image
         uses: docker/build-push-action@v6