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Updated the multi-stage-builds Docker concept to include installing J… (#21206) 

Updated the multi-stage-builds Docker concept page to include a
prerequisite for Java. Also updated the link and screenshot for the
Spring Initializer to the latest version.
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Shelley Benhoff 2024-10-23 11:21:16 -04:00 committed by GitHub
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content/get-started/docker-concepts/building-images/multi-stage-builds.md
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@ -57,10 +57,12 @@ In this hands-on guide, you'll unlock the power of multi-stage builds to create
1. [Download and install](https://www.docker.com/products/docker-desktop/) Docker Desktop.
2. Open this [pre-initialized project](https://start.spring.io/#!type=maven-project&language=java&platformVersion=3.3.0-M3&packaging=jar&jvmVersion=21&groupId=com.example&artifactId=spring-boot-docker&name=spring-boot-docker&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.spring-boot-docker&dependencies=web) to generate a ZIP file. Here’s how that looks:
2. [Download and install](https://www.oracle.com/java/technologies/downloads/) Java.
3. Open this [pre-initialized project](https://start.spring.io/#!type=maven-project&language=java&platformVersion=3.4.0-M3&packaging=jar&jvmVersion=21&groupId=com.example&artifactId=spring-boot-docker&name=spring-boot-docker&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.spring-boot-docker&dependencies=web) to generate a ZIP file. Here’s how that looks:
![A screenshot of Spring Initializr tool selected with Java 21, Spring Web and Spring Boot 3.3.0](images/spring-initializr.webp?border=true)
![A screenshot of Spring Initializr tool selected with Java 21, Spring Web and Spring Boot 3.4.0](images/multi-stage-builds-spring-initializer.webp?border=true)
[Spring Initializr](https://start.spring.io/) is a quickstart generator for Spring projects. It provides an extensible API to generate JVM-based projects with implementations for several common concepts — like basic language generation for Java, Kotlin, and Groovy.
@ -70,7 +72,7 @@ In this hands-on guide, you'll unlock the power of multi-stage builds to create
For this demonstration, you’ve paired Maven build automation with Java, a Spring Web dependency, and Java 21 for your metadata.
3. Navigate the project directory. Once you unzip the file, you'll see the following project directory structure:
4. Navigate the project directory. Once you unzip the file, you'll see the following project directory structure:
```plaintext
@ -107,7 +109,7 @@ In this hands-on guide, you'll unlock the power of multi-stage builds to create
contains most of the information needed to build a customized project. The POM is huge and can seem
daunting. Thankfully, you don't yet need to understand every intricacy to use it effectively.
4. Create a RESTful web service that displays "Hello World!".
5. Create a RESTful web service that displays "Hello World!".
Under the `src/main/java/com/example/spring_boot_docker/` directory, you can modify your