Hello world with Spring Boot and Docker

This is a small example of how to create a Docker container using Spring boot.

Here we go ...

1. Create new Spring boot App spring initializr dependencies (spring web)

2. Create new class HelloWorldController.java
   

@RestController
@RequestMapping("/api/v1/hello-world")
public class HelloWorldController {
    @GetMapping()
    public String getHelloWorld(){
        return "Hello everyone from Spring Boot App";
    }
}

1. Build jar file with maven

1. Create Dockerfile in project root

FROM openjdk:11
ADD target/demo-hello-0.0.1-SNAPSHOT.jar demo-hello.jar
EXPOSE 8090
ENTRYPOINT ["java", "-jar", "demo-hello.jar"]

1. Generate imagen

>docker build -t image_hello .

1. Generate container

> docker run --name hello_container -p 9000:8080 image_hello

1. Test

localhost

Thank you so much for reading my post