23 Mar 2020
executar um comando num contentor:
docker exec -it xana_nginx cat /etc/sysctl.d/00-alpine.conf
determinar o ip de todos os contentores:
docker ps -q | xargs -n 1 docker inspect --format '{{ .Name }} {{range .NetworkSettings.Networks}} {{.IPAddress}}{{end}}' | sed 's#^/##';
https://gist.github.com/ipedrazas/2c93f6e74737d1f8a791