$ docker exec 8c4d956cf9cf ping -qc 3 172.17.0.54
PING 172.17.0.54 (172.17.0.54) 56(84) bytes of data.

--- 172.17.0.54 ping statistics ---
3 packets transmitted, 3 received, 0% packet loss, time 1999ms
rtt min/avg/max/mdev = 0.065/0.084/0.095/0.015 ms
