#! /bin/bash

# check if we already use an external mirror
grep -q "external mirror" $target/etc/apt/sources.list && exit 0

cat <<EOM > $target/etc/apt/sources.list
# external mirror
deb MIRRORURL $ubuntudist main restricted universe multiverse
deb MIRRORURL $ubuntudist-updates main restricted universe multiverse
deb MIRRORURL $ubuntudist-security main restricted universe multiverse
EOM

# determine a fast mirror for Ubuntu
list=$(curl -s http://mirrors.ubuntu.com/mirrors.txt)
mirror=$(netselect $list | awk '{print $2}')
sed -i -e "s#MIRRORURL#$mirror#" $target/etc/apt/sources.list