Consider converting your scripts to proper POSIX shell syntax rather than bash

Your scripts (`/scripts`) have a `.bash` extension which I find rather odd.
Bash, while compatible with POSIX introduces many non-standard 'features'. Please consider revising your scripts to proper POSIX strict syntax to ensure compatibility across different systems (e.g. Alpine and OpenBSD ship with shells other than bash and many individuals replace bash with more frugal and secure shells). Your support of bash also results in enforcing it as standard which promotes obese and insecure software (bash has hundreds, if not thousands and upwards of registered bugs).

Review the scripts under /scripts and identify which syntax depends on bash rather than POSIX shell behavior. Check the scripts against the compatibility goal described for Alpine and OpenBSD, then verify that all scripts use proper POSIX syntax without changing their intended behavior.

Written by the indexing model from the issue text.