Add SIGINT handler to entrypoint.

docker/entrypoint.sh

@@ -73,7 +73,8 @@ start=$(date +%s.%N);
 echo "Running PRRT with command: \"$command $PRRT_PARAMS\" and link parameters: \"$NETEM_PARAMS\""
 
 #tc qdisc add dev $dev root netem $NETEM_PARAMS
-LOG=`/prrt/$command $PRRT_PARAMS 2>&1`
+trap 'echo "Caught SIGINT."; killall -SIGINT $command' INT
+LOG=$(/prrt/$command $PRRT_PARAMS 2>&1)
 printf "$LOG\n"
 echo "Exit status: $?"
 dur=$(echo "$(date +%s.%N) - $start" | bc);