diff --git a/CHANGELOG.md b/CHANGELOG.md
index 43595e5..faaeef8 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,8 @@
 ## Changelog
 
 ### v5.3.0-beta (2021-10-03)
+* adding check for PACKAGES (#201)
+* adding packages for discovery
 * adding packages for backitup
 * reorganizing Dockerfile
 
diff --git a/debian/node12/Dockerfile b/debian/node12/Dockerfile
index 2b575d4..fe2edfd 100644
--- a/debian/node12/Dockerfile
+++ b/debian/node12/Dockerfile
@@ -18,6 +18,7 @@ RUN apt-get update && apt-get install -y \
     cifs-utils \
     curl \
     gosu \
+    iputils-ping \
     jq \
     locales \
     nfs-common \
diff --git a/debian/node14/Dockerfile b/debian/node14/Dockerfile
index e528dd7..694bfb0 100644
--- a/debian/node14/Dockerfile
+++ b/debian/node14/Dockerfile
@@ -18,6 +18,7 @@ RUN apt-get update && apt-get install -y \
     cifs-utils \
     curl \
     gosu \
+    iputils-ping \
     jq \
     locales \
     nfs-common \
diff --git a/debian/scripts/setup_packages.sh b/debian/scripts/setup_packages.sh
index d959a5b..2b02eff 100644
--- a/debian/scripts/setup_packages.sh
+++ b/debian/scripts/setup_packages.sh
@@ -5,7 +5,10 @@ then
   apt-get -qq update
   packages=$(cat /opt/scripts/.packages)
   for i in $packages; do
-    sudo apt-get -qq -y install $i
+    if [ $(dpkg-query -W -f='${Status}' $i 2>/dev/null | grep -c "ok installed") -eq 0 ];
+      then
+        sudo apt-get -qq -y install $i
+      fi
   done
 elif [ $1 == "-update" ]
 then