run.bash

#!/bin/bash

ENVS=(`env|grep _TCP_ADDR`)
for addr_env in "${ENVS[@]}"
do
  address=`echo $addr_env|cut -d \= -f 2`
  port=`printenv ${addr_env%_ADDR*}_PORT`
  echo "Waiting on TCP connection to $address:$port"
  while ! exec 6<>/dev/tcp/${address}/${port}; do
    sleep 2
  done
done