Can I run a database, API, and web server on one computer?

Docker Compose is probably the best fit. You can define the database, API, and web server as separate services in one YAML file. Each service runs in its own container, and Compose creates a network so they can communicate as if they were separate machines. The whole stack can then be started with one command.

A local development environment is standard for this kind of project. You could use a Linux environment, including a virtual machine or a Linux compatibility layer on Windows, and install the services directly. A reverse proxy such as Apache or Nginx can route different local hostnames to the appropriate application, while a hosts-file entry or local DNS can make the setup feel more like a real deployment. For a small learning project, though, separate ports or Docker Compose will usually be simpler.

You don’t need containers to get started. Run each program directly on your computer and assign it a different port—for example, the web server on 8000, the API on 8001, and the database on its normal database port. This is common for local development and is a good way to understand how the pieces interact before adding Docker.

Containers are convenient, but they don’t perfectly reproduce production. For a closer simulation, you can create several virtual machines with software such as VirtualBox and install a complete operating system on each one. That gives you more realistic isolation, networking, permissions, and system administration, though it uses considerably more memory and setup time.