How to make multiple websites in one Flask application?

Question

Flask

Tell me how you can make a lot of different sites, with almost the same functionality, but completely different design on one application written using Flask?
Those. it is written, something like a CMS and is used for about 10 sites, on one VPS.

UPD: So far I'm doing this: I took the request manager from the Flask documentation (there is one there).
The script scans the underlying directories, and if it finds a config in them, then for each directory it creates an application instance with the settings specified in the file, while specifying the variables: root_path, instance_path, template_folder, static_folder.
Further, the list of instances is transferred to the dispatcher, which selects by the host parameter in the request which application to transfer the request to next.

Answer 1

I had a similar task.
Solved it like this:

@app.before_request
def before_request():
    sitename = db = ""
    if request.headers['Host'] in 'www.example1.com':
        sitename = 'example1.com'
        db = 'example1_com'
    elif request.headers['Host'] in 'www.example2.com':
        sitename = 'example2.com'
        db = 'example2_com'	
    else:
        sitename = 'test.com'
        db = 'test_com'
     # И т.д.
     app.jinja_env.globals['sitename'] = sitename

Well, that is, the resolution was at the @app.before_request level.

Answer 2

So are there patterns? Just make a variable with paths to different templates and that's it.