Built with Clojure and GraalVM (as it is popular these days), with a sprinkle of UNIX domain sockets and love. And of course you can still write Dockerfiles, especially if you want to give back to the community and create an into-docker builder image! If you have a Clojure/Docker project lying around, how about going into the root directory and running the following?

into build -t my-clojure-app intodocker/clojure