Deploying a FastAPI application with Docker

Docker is a widely used technology for containerization. Containers are small, self-contained systems running on a computer. Each container contains all the files and configurations necessary for running a single application: a web server, a database engine, a data processing application, and so on. The main goal is to be able to run those applications without worrying about dependency and version conflicts that often happen when trying to install and configure them on the system.

Besides, Docker containers are designed to be portable and reproducible: to create a Docker container, you simply have to write a Dockerfile containing all the necessary instructions to build the small system, along with all the files and configuration you need. Those instructions are executed during a build, which results in a Docker image. This image is a package containing your small system, ready to use, that you can easily share on the internet through registries...