The use case for Docker on Amazon 2023 is when you have an application and need to containerize it. You can create a Dockerfile, which is a file with instructions about what you need for your container. If you need a specific operating system to run your application, in the Dockerfile you can put the operating system that you can use in your container.
Principally, we are running microservices with Java, using the Spring Boot framework with Docker on Amazon 2023.