docker ps --filter='label=rap.host' --format '{{join (split (.Label "rap.host") ",") "\r"}}'
docker ps \
--filter 'label=rap.host' \
--format '{{ .ID }}' \
| while read id; \
do
docker exec $id sh -c 'test -d /var/www/html/wp-content' \
&& docker inspect $id --format '{{ join (split (index .Config.Labels "rap.host") ",") "\r" }}';
done | sort
docker ps -q --filter name=mariadb | xargs docker inspect --format '{{.State.Pid }}, {{.Name}}'