#!/usr/bin/env bash

for cf in /etc/postfix/*.cf; do
  sed -iE -e 's/%DB_PASSWORD%/${DB_PASSWORD}/g' \
          -e 's/%DB_HOST%/${DB_HOST}/g' \
          -e 's/%DB_USER%/${DB_USER}/g' \
          -e 's/%DB_DATABASE%/${DB_DATABASE}/g' ${cf};
done

/usr/sbin/postfix start-fg