Dockerize webservice

[yamcodes]

Clear and concise description of the problem

As a developer working on elysia-realworld-example-app I want to use a dockerized webservice so that I can ensure a consistent development environment across the team, simplify the setup process, and make it easier to deploy the application in CI.

Suggested solution

This guide seems to cover the gist of it: https://www.cloudbees.com/blog/using-docker-compose-for-nodejs-development
Use Bun instead of Node.

Alternative

There isn't any good alternative for assuring the sustainability of this project and opening the door for smooth deployments. This is the best practice.

Additional context

We should also create a Dockerfile.

Validations

• Read the Contributing Guide.
• Read the README.md.
• Check that there isn't already an issue that requests the same feature.