https://github.com/koalaman/shellcheck/wiki/SC2068
https://github.com/koalaman/shellcheck/wiki/SC2152

https://packit.dev/docs/configuration

Building from main are enabled in
https://copr.fedorainfracloud.org/coprs/g/osci/mini-tps
but commented out here because we don't
want it until we have a good CI.

Per rpmlint it's not permitted for packages to install files there.
E: dir-or-file-in-usr-local

Also use install instead of mkdir & cp.

Also use
: "${VARIABLE:=default}"
to define a default value for a variable.
It's more simple than
VARIABLE="${VARIABLE:-default}"
and less typo-prone (this change fixes some typos).

Also fixes
/usr/local/bin/mtps-setup: line 62: DEBUG: unbound variable
when running the pipeline on module build.