diff --git a/tasks/docker-registry/task.yaml b/tasks/docker-registry/task.yaml
index 3154aa8..6c41193 100644
--- a/tasks/docker-registry/task.yaml
+++ b/tasks/docker-registry/task.yaml
@@ -57,14 +57,22 @@ spec:
         USERNAME=$(cat /workspace/docker-auth/username)
         PASSWORD=$(cat /workspace/docker-auth/password)
         REGISTRY=$(echo "$IMAGE" | cut -d/ -f1)
+        AUTH=$(echo -n "$USERNAME:$PASSWORD" | base64)
 
         echo "📦 Using image: $IMAGE"
         echo -n "$IMAGE" > /tekton/results/imageUrl
 
         echo "🔐 Writing Docker config for $REGISTRY..."
         mkdir -p /tekton/home/.docker
-        echo "{\"auths\": {\"$REGISTRY\": {\"auth\": \"$(echo -n "$USERNAME:$PASSWORD" | base64)"}}}" \
-          > /tekton/home/.docker/config.json
+        cat <<EOF > /tekton/home/.docker/config.json
+        {
+          "auths": {
+            "$REGISTRY": {
+              "auth": "$AUTH"
+            }
+          }
+        }
+        EOF
 
     - name: kaniko-build
       image: bitnami/kaniko:1.23.2