Add sorting for startup files

[anatolinicolae]

Alphanumerically sort files found in /startup.1.d and /startup.2.d directories, to prevent non regular script execution.

Not sorting whatever find finds, ends up in a messy script execution order like so:

# find -L /startup.1.d -type f -iname '*.sh'
/startup.1.d/050-fix-permissions.sh
/startup.1.d/100-start-scheduler.sh
/startup.1.d/010-copy-app-files.sh
/startup.1.d/011-link-history-docs.sh
/startup.1.d/020-copy-config-files.sh
/startup.1.d/030-add-opcache-dashboard.sh
/startup.1.d/031-add-phpinfo.sh

Piping find's output to sort -n actually fixes the order resulting in what we're actually expecting the execution order to be:

# find -L /startup.1.d -type f -iname '*.sh' | sort -n
/startup.1.d/010-copy-app-files.sh
/startup.1.d/011-link-history-docs.sh
/startup.1.d/020-copy-config-files.sh
/startup.1.d/030-add-opcache-dashboard.sh
/startup.1.d/031-add-phpinfo.sh
/startup.1.d/050-fix-permissions.sh
/startup.1.d/100-start-scheduler.sh

[cytopia]

Thanks 👍