Scheduling backups with GitLab CI/CD

I recently created a small Django project to manage a rolling menu for our family meals. It’s not a large project. I’m hosting it on a Digital Ocean droplet (for which I pay $4/month, and it runs more than one project), and I have a free-tier Postgres database with ElephantSQL. Because this is only a personal project, I didn’t want to pay for the database or any backups there (though my experience so far of ElephantSQL is positive, and for a larger project I may well do this!