This should not be the case as it is basically be an engineering issue. I can mount the vm contained file system before the first boot and do any change done by a Bitnami setup script post boot. However, I am not familiar with the customization done by Bitnami and am, thus, inquiring here. I tried replicating the files created by
systemctl manually, but it sadly had not the hoped effect. Also deleting the
do_not_start_ssh file was not sufficient either.