This is fine if you have a small single node database that can have some downtime. Once you need replicas, to fit your database in ram for performance, or reliability with a hot standby for failovers it becomes a lot more complicated.

You should consider what (if anything) you miss out on by just running in a single vm that you can scale out much easier down the road should you need to. Alternatively pay extra for a hosted solution that simplifies those steps further.