# check if we already use an external mirror
grep -q "external mirror" $target/etc/apt/sources.list && exit 0
-dist=trusty
-
cat <<EOM > $target/etc/apt/sources.list
# external mirror
-deb MIRRORURL $dist main restricted universe multiverse
-deb MIRRORURL $dist-updates main restricted universe multiverse
-deb MIRRORURL $dist-security main restricted universe multiverse
+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