Generate specific tags for JDK Images

When dealing with packages, `jre` and `jdk`, there is a tag for `jre` images. For example, ` jre-nightly`, points to the nightly build of `jre`. There is no specific tag for `jdk`, which results in the image being tag as just `nightly`.

For clarity, there should be a specific tag for `jdk` builds. I am fine with have a tag for just `nightly` as long as there is another tag pointing to the same image called `jdk-nightly`.

This would make automation easier and provide more clarity for users.