Is your feature request related to a problem? Please describe.

Some users need to change umask.
Example:

• File permissions can't have full accesss #4810

Currently, we have to use the command line option --umask.
It is inconvenient for the service or container image.

Describe the solution you'd like

Add umask option to the System config.

Describe alternatives you've considered

Without this option in System config, we can customize the command line options like #4810 (comment), but it is inconvenient.

Additional context

No response