/var/vcap/packages/runc/bin/runc exec -t <instance_id> /bin/bash

exec failed: container "<id>" does not exist

runc list

diego-cell/49dbeca6-36eb-4910-94b9-48960891a0b1:~# /var/vcap/packages/runc/bin/runc list
ID          PID         STATUS      BUNDLE      CREATED     OWNER
diego-cell/49dbeca6-36eb-4910-94b9-48960891a0b1:~#