Deploy Rails 7 with Docker and Nginx

The easiest solution to deploy a Rails application is something like Heroku or Hatchbox or DigitalOcean Apps. But for some small projects I like to use my existing VPS.I assume you have a VPS with Ubuntu 20.04 and Docker and Nginx installed.If you use DigitalOcean you can select the Docker image in the marketplace and add Nginx to it.