A set of very minimal [Docker][1] images to run [Oracle Java][2] applications.
These images use Busybox [Busybox][3] for their userland instead of Ubuntu or CentOS to keep the image size minimal (~150MB).
You can contrast these images with the approx. 700MB image sizes for the [dockerfile/java][4] official Java builds.
REPOSITORY TAG VIRTUAL SIZE
busybox-java jre7 146.9 MB
busybox-java jdk7 148 MB
busybox-java jre8 160.7 MB
busybox-java jdk8 162.4 MB
dockerfile/java openjdk-7-jre 710.1 MB
dockerfile/java oracle-java8 755.2 MB
These images are inspired by / based off of original work by:
https://github.com/errordeveloper/dockerfile-oracle-java
https://github.com/jeanblanchard/docker-busybox-java
https://github.com/progrium/busybox
Q: Why use the Oracle JREs, why not the OpenJDK?
A: The OpenJDK has a huge amount of external dependancies. The Oracle JREs on the other hand do not depend on any shared libraries and are therefore much easier to get to work on a striped bare userland such as Busybox.
jre7: Oracle Java 7 (Server JRE)jdk7: Oracle Java 7 (JDK)jre8: Oracle Java 8 (Server JRE)jdk8: Oracle Java 8 (JDK)
These images include cURL and useradd as most downstream images will need to download JARs and need to run as a non-root user.
Example:
docker run --rm --interactive --tty busybox-java:jre8TODO: How to use the Makefile.
TODO: Add link to an example downstream image using this base.
MIT for the Dockerfiles and docs.
By using any of these Dockerfiles or any derived containers you are accepting the terms of the [Oracle Binary Code License Agreement for the Java SE Platform Products and JavaFX][4]. [1]: https://www.docker.com/ [2]: https://www.java.com/ [3]: http://www.busybox.net/ [4]: https://registry.hub.docker.com/u/dockerfile/java/ [5]: http://www.oracle.com/technetwork/java/javase/terms/license/index.html