Dockerizing a Spring Boot Application

Dockerizing a Spring Boot application involves creating a Docker image for the application, which can then be run in a Docker container. This tutorial will guide you through the steps to dockerize a Spring Boot application, including creating a Dockerfile, building the Docker image, and running the application in a Docker container.

Prerequisites

• JDK 17 or later
• Maven or Gradle
• Docker installed on your machine
• IDE (IntelliJ IDEA, Eclipse, etc.)

Step 1: Set Up a Spring Boot Project

1.1 Create a New Spring Boot Project

Use Spring Initializr to create a new project with the following dependencies:

• Spring Web

Download and unzip the project, then open it in your IDE.

1.2 Create a Simple REST Controller

Create a simple REST controller to test the application.

package com.example.demo.controller;

import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class HelloController {

    @GetMapping("/hello")
    public…