Security is a tough thing to give advice about. Different people have different levels of risk tolerance. It’s embarrassing to give advice about one’s personal views - tedious to write - and then get replies about how that’s too much security, too little security, etc.
Attackers can use tricks to enumerate dns subdomains. They can compromise one container and pivot to the container host.
You can frustrate automated compromises by putting up roadblocks or speed bumps they have to get through before seeing the stock landing or login pages for well known apps. That can buy you a little time if a serious exploit is discovered and you know you won’t be on top of container updates. But stay on your container updates.