@robi Thanks for the suggestions.
It has made me all the more thankful for Cloudron, and how it's made Docker more accessible. I've previously used LAMP for my Wordpress, and only, thankfully, once before had a site hacked. Of course, that led to the whole LAMP setup being compromised. I did have backups then too, which helped, but man, seeing that hack spread through my LAMP was disheartening. I had tried to use Docker, and portainer, and such, but conceptually I just could never get more than 2 apps up and running and connected. I came across Cloudron... and voila, it all works, and the WP sites are all self-contained so that if one is hacked, the whole thing doesn't come crashing to a halt.