diff --git a/Dockerfile b/Dockerfile
index 2c31209..82c30c8 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -25,9 +25,9 @@ RUN ["bash", "-exo", "pipefail", "-c", "\
 
 ## install easysnmp
 # need for full-features (add maybe if need): libsnmp-dev snmp-mibs-downloader
-ARG SOURCELIST_FILE="/etc/apt/sources.list.d/debian.sources"
+# sed -i 's|main|main non-free|g' $SOURCELIST_FILE ; \
+# ARG SOURCELIST_FILE="/etc/apt/sources.list.d/debian.sources"
 RUN ["bash", "-exo", "pipefail", "-c", "\
-    sed -i 's|main|main non-free|g' $SOURCELIST_FILE ; \
     apt update ; \
     apt-get install -y python3-easysnmp ; \
     apt clean all ; \