Do not run `set-env-variables.sh` to set ARCH and OS variables
to avoid the CI failing because of shellcheck lint problems.
Signed-off-by: Miguel Martín <mmartinv@redhat.com>
Make it possible to test if system FIPS mode has been enabled
in the resulting images by running the scripts with a FIPS="true"
environment variable
Signed-off-by: Miguel Martín <mmartinv@redhat.com>