Install missed packages into dockerized Ubuntu Linux 18.04.5 LTS (Bionic Beaver)

apt update

# host

apt install bind9-host

# route, netstat

apt install net-tools

# ping

apt install iputils-ping

# telnet

apt install telnet

# tracepath

apt install iputils-tracepath

# traceroute

apt install traceroute

# ss, ip a

apt install iproute2

# dig

apt install dnsutils

# ps, top, free

apt install procps