Debugging
List all docker container names and their IPs:
$ sudo docker ps -q | xargs -n 1 sudo docker inspect --format '{{ .Name }} {{range .NetworkSettings.Networks}} {{.IPAddress}}{{end}}' | sed 's#^/##';
List exposed ports of docker containers:
$ sudo docker container ls --format "table {{.ID}}\t{{.Names}}\t{{.Ports}}" -a