Which service should I use for a website/web-app which has multiple app products for many users?

I am starting a business that provides many users with different types of trading bots and other products. I am currently creating a separate app manually for each user when they register and buy one as there are few users. I know this is tricky but it works for a small number of users I currently have. I can create a multi-user application where I just add a user to the database and run their app in a separate thread, but the point is that it is far better that each user have their own bot for the sake of performance. My question is: Is there a service in Digitalocean that I can manage all the separate apps in one place and most importantly automate the process of creating a dedicated app for each user when they register and buy one of them?