How to implement "deploy on demand"?

Question

Software Deployment

Hello!
The task is to implement a trial period for a web application (for example, as on the megaplan.ru website):
- the user enters a separate web application, where he creates an account
- based on the entered data, a separate domain is generated username.example.comon which the application is deployed
- when switching to username.example.com, in fact, we see our application
The first thing that comes to mind is two scripts: for creating a virtual host and for deploying an application on it, but I suspect there are better options.
Haven't worked with docker before. Perhaps this task is solved better on it?

Answer 1

I understand correctly that you want to create a new VPS for each user? I don’t think that anyone practices this, because. it doesn't make much sense (although I don't know what your product is). I think your problem is solved by isolating users from each other at the application level. DNS is configured via wildcard, i.e. A-record like *.domain.com, routing - at the application/web server level.
If you really want to raise a VPS for a user, then the API of the same AWS allows this. You can deploy instances directly from the virtual machine image. Here you need to read the documentation of your hosting provider.
As for Docker, I don't think it can be adapted here somehow.