diff --git a/_CI-CD/debian-stable/Dockerfile b/_CI-CD/debian-stable/Dockerfile
index 84ca189..ee16704 100644
--- a/_CI-CD/debian-stable/Dockerfile
+++ b/_CI-CD/debian-stable/Dockerfile
@@ -1,9 +1,10 @@
 FROM debian:stable-slim
 
-RUN sed -i 's@deb.debian.org@apt-cache.service.nr5/deb.debian.org@g' /etc/apt/sources.list && \
+RUN ls -la /etc/apt/sources* && \
+    sed -i 's@deb.debian.org@apt-cache.service.nr5/deb.debian.org@g' /etc/apt/sources.list && \
 	sed -i 's@security.debian.org@apt-cache.service.nr5/security.debian.org@g' /etc/apt/sources.list && \
 	apt-get update && apt-get install -y \
-	dnsutils procps nmap bash iputils-ping bash && \
+	dnsutils procps nmap bash iputils-ping bash
 
 RUN	apt-get remove -y --purge man-db ;\
 	apt-get autoremove -y --purge ;\