diff --git a/circleci/images/exttester/Dockerfile b/circleci/images/exttester/Dockerfile
index b5e2442..b979786 100644
--- a/circleci/images/exttester/Dockerfile
+++ b/circleci/images/exttester/Dockerfile
@@ -183,8 +183,8 @@ apt-get install -y --no-install-recommends --allow-downgrades \
     libpq5=${pgdg_version} \
 
 # debug
-RUN echo "DEBUG-1"
-RUN ls -al /usr/lib/x86_64-linux-gnu/libpq.so*
+echo "DEBUG-1"
+ls -al /usr/lib/x86_64-linux-gnu/libpq.so*
 
     # clear apt cache
 rm -rf /var/lib/apt/lists/*