When creating a new Ubuntu Lightsail instance and adding a launch script is the script you enter only run when you FIRST initialize the instance and NOT every time you reboot or restart the same instance? I would love to automate updates and install applications when I create the instance, but I would also like to run updates and start servers when the instance is rebooted or restarted.
Can I (should I) use the launch script for this? Or would it be better to create a second script to do all the tasks after reboot?