#!/bin/sh

# The script that is called in the trap must also stop the DB, so below call to
# dropdb is not enough, it just demonstrates how to call anything in the stop-container scenario!
trap "dropdb <params>" HUP INT QUIT TERM

# init your DB -every- time container starts
<init script to import to clean and import dump>

# start your postgres DB
postgres

echo "exited $0"