add iputils-ping dependency

Author: jsadowyj

Dockerfile.debian11

@@ -9,7 +9,7 @@ ADD create-sensu-asset /usr/bin/create-sensu-asset
 WORKDIR /
 
 RUN apt-get update && \
-    apt-get install -y build-essential curl libexpat1-dev openssl libssl-dev libz-dev snmp dnsutils procps && \
+    apt-get install -y build-essential curl libexpat1-dev openssl libssl-dev libz-dev snmp dnsutils procps iputils-ping && \
     curl -s -L -O https://www.monitoring-plugins.org/download/monitoring-plugins-2.3.3.tar.gz && \
     tar xzf monitoring-plugins-2.3.3.tar.gz && \
     cd monitoring-plugins-2.3.3 && \