They are generally deployed separately. Django is used to build a rest API and webpack / Vue are deployed on their own to consume the API. You can put something like nginx in front to route API requests to Django and everything else to an s3 bucket for your single page app.
Any tips on where to look or what to read to implement something like this? I put in an hour or two experimenting with how I could do it and there seem to be a lot of moving parts I’m not familiar with.