Repro:

  1. https://start.spring.io/#!type=gradle-project&language=java&platformVersion=3.1.3&packaging=jar&jvmVersion=17&groupId=com.example&artifactId=demo&name=demo&description=Demo%20project%20for%20Spring%20Boot&packageName=com.example.demo
  2. gradlew bootBuildImage
  3. Inspect image in e.g. Docker Desktop

Actual:

All layers have blank commands.

This makes finding out what's inside rather painful.

Expected:

Each layer has a command

Comment From: bclozel

By "layer commands" are you referring to "COPY" "RUN" etc commands?

If that's the case I don't think we can do much here. The layers are built by https://github.com/paketo-buildpacks/java and the process is mostly out of our control. More, buildpacks build layers but do much more than running such commands. You can have a look at the Spring Boot one.

Comment From: mwisnicki

Thanks. Looks to me like non-command based builders could at least leave comments? Not sure what's allowed in the image metadata but if real comments are not possible then one could abuse RUN with echo or fake command. At minimum it could insert information about each buildpack.

Although I guess this would be a request for paketo project?

Comment From: bclozel

Yes. I'm not sure where this issue should be created as it's a general comment.

Maybe start a new discussion here?

https://github.com/buildpacks/community/discussions