#!/bin/sh
set -f

while [ -n "${ENVSUBST_ARGS}" ] ; do
	[ -f "${ENVSUBST_ARGS}" ] || break
	[ -s "${ENVSUBST_ARGS}" ] || break

	exec envsubst "$(cat "${ENVSUBST_ARGS}" </dev/null)" "$@"
	exit 126
done

exec envsubst "$(envsubst-args.sh </dev/null)" "$@"