Thanks for the response
This product looks interesting for migrating multisite wordpress installs
I have duplicator pro (which might do the same thing), so the process would be:
Backup/duplicate entire multisite install to a remote location (or desktop)
Spin up a new Bitnami Wordpress image
Migrate/install backed up site to new image
Are there other variables that need to be considered, such as SSL certificates and httpd scripts etc? Or is that part of the backup?