This image is less than 200 Mb. With a bit more talent, maybe you can make it even smaller.
A well established Computer Science rule of thumb - smaller is faster, smaller is better.
The name of the image pretty much explains everything else. If you're curious, go ahead and look at the unremarkable dockerfile.
I created this image because I think that a 700Mb image for just Java is INSANE.
If you can make this image smaller or better, go ahead, I will happily accept the pull request.