the script uses the environment values ping_hosts and http_hosts to select the targets, if youre running them from the cli, you most likely need to export them before like

export ping_hosts="localhost localhost" && export http_hosts="https://duck.com https://google.com" && ./status.sh

do not quote individual hosts
https needs to specified most of the time to avoid 308s

the status-server.sh file includes a loop at the end which is needed in my docker setup, nothing else is different

for running the script in docker, see the included compose file