add tcpdump script

dockerfile

@@ -1,7 +1,7 @@
 FROM ubuntu:latest
 
 RUN apt-get update && apt upgrade -y && apt-get autoremove -y
-RUN apt-get install util-linux nano xz-utils wget systemctl sudo git -y
+RUN apt-get install util-linux nano xz-utils wget systemctl sudo git tcpdump -y
 
 ADD https://github.com/just-containers/s6-overlay/releases/download/v3.1.6.0/s6-overlay-noarch.tar.xz /tmp
 RUN tar -C / -Jxpf /tmp/s6-overlay-noarch.tar.xz

scripts/tcpdump.sh

@@ -0,0 +1,4 @@
+#!/bin/bash
+tcpdump port 67 or port 68 or port 69
+exit
+

start.sh

@@ -14,6 +14,8 @@ menue()
 	echo "x)  	Stop the docker-containers"
 	echo "u)	Update the PXE-Server"
 	echo ""
+	echo "t)	Show TCPDUMP on port 67-69 of the PXE-Container"
+	echo ""
 	echo "D)  	DELETE the existing docker-containers and docker images completely" 
 	echo ""
 	echo "EXIT 	Exit this script, but PXE-Server is running, if started"
@@ -78,6 +80,15 @@ menue()
 			;;
 			#############################################
 
+		t)	clear
+			docker exec -it pxe-container bash tcpdump.sh
+			clear
+			echo "TCPDUMP stopped"
+			echo""
+			menue
+			;;
+			#############################################
+
 		D)	clear
 			docker-compose down
 			docker rmi  pxe-image:latest