Where do i should save my docker postgres backups?

Question

I'm have a docker-compose with a postgres service, currently it only has one service but in the future it will contain more.

version: '3.8'

services:
  postgres-dev:
    image: postgres
    environment:
      POSTGRES_DB: dev_db
      POSTGRES_USER: dev_user
      POSTGRES_PASSWORD: dev_password
    volumes:
      - postgres-dev-data:/var/lib/postgresql/data
    ports:
      - "5433:5432"

volumes:
  postgres-dev-data:

I learn that if i want to create a backup for this db i should run something like docker-compose exec --interactive -u <your_postgres_user> <service> pg_dump -Fc <database_name_here> > db.dump

So, my question is, where is the best place to save this db.dump? Is it okey to save it on another volume? What is the best practice to do it?

Is it possible to save it for example in a firebase storage?

Thanks!

I did not try anything yet, i just want to know from experienced people that have done it