#!/usr/bin/env bash

set -e

if [ $# -ne 1 ]; then

echo "Usage: $0 <arch>"

exit 1

fi

if [ "x$OUTERUSER" == "x" ] ; then

echo "Please set OUTERUSER to the host-side low privilaged user name"

exit 1

fi

MIRROR='https://uk.alpinelinux.org/alpine/latest-stable/main'

ARCH=$1

APKPKG='apk-tools-static-2.14.4-r0.apk'

AROOT=alpine_root

mkdir "$AROOT"

curl -LO "$MIRROR/$ARCH/$APKPKG"

tar -xzf "$APKPKG"

./sbin/apk.static -X "$MIRROR" -U --allow-untrusted -p "$AROOT" --initdb add alpine-base build-base || true

cp alpine_passwd "$AROOT/etc/passwd"

cp alpine_group "$AROOT/etc/group"