Need help ensuring my public mediawiki is safe before launch

Hi, I'm setting up a public wiki using mediawiki and I'd like some help ensuring the server and mediawiki is safely setup before I start sharing it publicly. I installed it on Vultr using the mediawiki app from the Vultr Marketplace. Are there any things I should ensure before publicly sharing the link?

Some things I've done so far:

• I disabled password login to the server so its only possible to login via ssh

• I made it so I have to approve of any edits to the wiki

• I still haven't enabled uploads of files because I want to ensure I only allow jpeg\png uploads.

I'm relatively new to running servers so any tips are highly appreciated.