fix: replace localhost with ip address in case localhost is ipv6 addr?? Norbert had an issue with his docker container where the healthcheck was timing out/failing. He diagnosed it as a ipv6 address bound to localhost. Not sure if this is the right fix. Might be better to determine where localhost is bound (V4 or V6 address) but I don't have an environment I can test with.

#! /bin/sh

# change this if you are not using 
localhost=127.0.0.1

# if there are multiple trackers, d=demo t=tracker ...
# returns last one for testing that server is up. Does not test
# each tracker.
tracker=$(ps -ef | sed -ne '/roundup-server/s/^.*\s\(\w*\)=.*$/\1/p')
wget -q -O /dev/null --proxy off --no-verbose http://$localhost:8080/"${tracker:-demo}"/