separate call to ldconfig

Dockerfile.debian-bookworm-hugo

@@ -5,5 +5,5 @@ ENV DEBIAN_FRONTEND=noninteractive
 RUN apt-get -qq update && \
     apt-get -qq dist-upgrade && \
     apt-get -qq install hugo && \
-    apt-get -qq clean && \
-    ldconfig
\ No newline at end of file
+    apt-get -qq clean
+RUN ldconfig
\ No newline at end of file