diff --git a/.drone.yml b/.drone.yml
index f1b8f35..314b8d0 100644
--- a/.drone.yml
+++ b/.drone.yml
@@ -34,6 +34,7 @@ steps:
       from_secret: MINIO_SERVER_SECRET_KEY
   commands:
     - mkdir ~/.docker
+    - echo "auth prefix: ${HARBOR_DOCKER_AUTH:0:20}..."
     - echo "$HARBOR_DOCKER_AUTH" > ~/.docker/config.json
     - >
       buildctl