use next-webapp-url for curl req domain

.github/workflows/docker-build-push-dockerhub.yml

@@ -133,7 +133,7 @@ jobs:
         
             for i in {1..1200}; do
               echo "Checking server health ($i/1200)..."
-              response=$(curl --silent --fail --write-out "%{http_code}" http://localhost:3000/auth/login)
+              response=$(curl --silent --fail --write-out "%{http_code}" ${{ env.NEXT_PUBLIC_WEBAPP_URL }}/auth/login)
               if [[ "$response" == "200" ]]; then
                 echo "Server is healthy"
                 # Now, shutdown the server