Why are you not having JAMF deploy the source files (pkg, dmg, etc)? If JAMF deploys the pkg, or dmg it will do everything needed to trigger the installation without further action on your part. The example you put in your post looks like a plist (maybe a launch agent), not a script.
If you must install a package with a script, the script below will do it. However, you still need to get the source files to the device. You can grab source files with CURL and script that, or use JAMF to cache the packages (or better use JAMF to install the packages). The choice is really up to you.
#!/bin/zsh
######################
# Script Name:
# Author:
# Date:
# Enhancements
######################
######################
# Exit Codes
# 0 - Success
# 1 -
# 2 -
######################
4=Package Name
##################################################################
# Reinstalling JAMF Protect
##################################################################
if [ -d "/Library/Application Support/JAMF/Waiting Room/$4" ]
then
echo "Something for the logs"
echo "Something else for the logs"
sudo installer -pkg "/Library/Application Support/JAMF/Waiting Room/$4" -target /
echo "Install Completed"
exit 0
else
echo 'Source files missing, exiting'
exit 1
fi
##################################################################
# Deleting source files
##################################################################
sudo rm -rf "/Library/Application Support/JAMF/Waiting Room/$4"
