createinstallmedia macOS 10.14 Mojave

#!/bin/bash
 set -e
 set -u
 set -x

tempfile=$(mktemp -u)
hdiutil create -size 8g -fs HFS+J -layout SPUD ${tempfile}
hdiutil attach ${tempfile}.dmg -noverify -nobrowse -mountpoint /Volumes/Install\ macOS\ Mojave
sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia --nointeraction --downloadassets --volume /Volumes/Install\ macOS\ Mojave
hdiutil detach /Volumes/Install\ macOS\ Mojave
hdiutil resize -size $(hdiutil resize -limits ${tempfile}.dmg | awk 'END { print $1 }')b ${tempfile}.dmg
hdiutil convert ${tempfile}.dmg -ov -format UDTO -o 'Install macOS Mojave'
rm ${tempfile}.dmg
mv Install\ macOS\ Mojave.{cdr,iso}