What is the best practice for creating a Docker image for Spring Boot applications using layers?

I am aware of two approaches. Below are Dockerfile snippets.

# This approach generates and runs application classes stored in the `extracted_layers/application/BOOT-INF/classes/` folder. 
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RUN java -Djarmode=layertools -jar app.jar extract --destination extracted_layers
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ENTRYPOINT ["java", "-XX:+UseContainerSupport", "-XX:MaxRAMPercentage=75.0", "-XX:+UseG1GC", "org.springframework.boot.loader.launch.JarLauncher"]

# This approach generates and runs the application jar stored in the `extracted_layers/application/` folder
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RUN java -Djarmode=tools -jar app.jar extract --layers --destination extracted_layers
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ENTRYPOINT ["java", "-XX:+UseContainerSupport", "-XX:MaxRAMPercentage=75.0", "-XX:+UseG1GC", "-jar", "app.jar"]

Notice the difference in the tool used specified by -Djarmode .

The documentation uses the jar approach: https://docs.spring.io/spring-boot/3.5/reference/packaging/container-images/dockerfiles.html

I would think that using the extracted classes provides a faster startup.