The following command will show you a list of all running docker containers with their PIDs
docker inspect -f '{{.State.Pid}}, {{.Name}}' $(docker ps -q)
Example output:
9046, /wordpress-myblog-btronik_wpcli_1 8848, /wordpress-myblog-btronik_wordpress_1 8795, /wordpress-myblog-btronik_phpmyadmin_1 8599, /wordpress-myblog-btronik_mariadb_1 3627, /wordpress-secondpage_wpcli_1 3505, /wordpress-mywebsite_wpcli_1 3172, /wordpress-secondpage_wordpress_1 2907, /wordpress-mywebsite_wordpress_1 2646, /wordpress-secondpage_mariadb_1 2518, /webmail_roundcube_1 2323, /wordpress-mywebsite_mariadb_1 2303, /redmine-mywebsite_mariadb_1