Do I need to import a RouterOS image into metarouter?

I add an enable a new metarouter, and it’s stuck in booting, with no output on the console?

Do I also need to upload a RouterOS image? Despite that RouterOS is already there ?

Which image file should I use, the base packages archive from mikrotik.com/downloads ?

How does metarouter know when a guest has finished booting?