corretto/corretto-8-docker

Split JDK and create a Corretto-JRE for runtime

marcellodesales opened this issue · 9 comments

marcellodesales commented

In addition to the JDK, used to BUILD an application, you guys should provide a JRE version for only the RUNTIME.

Users can use the image using a Multi-stage build. That way, the Runtime image should be much smaller.

  • Other reasons include security (not exposing javac to runtime systems)
arun-gupta commented

Here is how the Dockerfile could look like:

FROM maven:3.6-amazoncorretto-8 as BUILD

COPY . /usr/src/app
WORKDIR /usr/src/app
RUN mvn -s /usr/share/maven/ref/settings-docker.xml package

FROM amazoncorretto:8-jre
EXPOSE 8080 5005
COPY --from=BUILD /usr/src/app/target /opt/target
WORKDIR /opt/target
ENV _JAVA_OPTIONS '-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=5005'

CMD ["java", "-jar", "greeting.war"]
  • 👍9
GopinathMR commented

Here is the Dockerfile which can be used to create JRE distribution

FROM amazonlinux:2

# install amazon corretto-8 (JRE)
RUN /usr/bin/amazon-linux-extras enable corretto8
RUN /usr/bin/amazon-linux-extras install -y corretto8

ENV JAVA_HOME=/usr/lib/jvm/java-1.8.0-amazon-corretto.x86_64/jre
  • 👍8
Hades32 commented

also please create a headless version. There is so much unnused stuff in that image. Also already coming from amazonlinux:2 ...

  • 👍14
davecurrie commented

@Hades32 Slimming down our Docker images is something we are looking at doing.

  • 👍11
zaknuces commented

@davecurrie what is the plan for jre based container? It would be great to publish (and manage the upgrades) so that people can us it.

  • 👍1
davecurrie commented

@zaknuces They are planned although I can't share more info at this time.

  • 👍2
mattlorimor commented

@davecurrie

They are planned although I can't share more info at this time.

Here are all some common images that one might use for JDK 8 (with AL2 thrown in for comparison) sorted by size:

repo tag created size base
openjdk 8-jre-alpine 5 months ago 84.9MB alpine3.9
openjdk 8-alpine 5 months ago 105MB alpine:3.9
adoptopenjdk/openjdk8 alpine-jre 36 hours ago 122MB alpine:3.10
amazonlinux 2 6 weeks ago 163MB amazonlinux:2
openjdk 8-jre-slim 44 hours ago 184MB debian:buster-slim
adoptopenjdk/openjdk8 slim 37 hours ago 189MB ubuntu:18.04
adoptopenjdk/openjdk8 jre 6 weeks ago 200MB ubuntu:18.04
adoptopenjdk/openjdk8 alpine 37 hours ago 222MB alpine:3.10
openjdk 8-jre 44 hours ago 246MB buildpack-deps:stretch-curl
openjdk 8-slim 44 hours ago 284MB debian:buster-slim
adoptopenjdk/openjdk8 latest 3 weeks ago 305MB ubuntu:18.04
amazoncorretto 8 3 days ago 390MB amazonlinux:2
openjdk 8 44 hours ago 488MB buildpack-deps:stretch-scm

amazoncorretto:8 is the second largest.

Nearly all of the increase from the 163MB amazonlinux:2 image to the 390MB amazoncorretto:8 image is in the /usr/lib/jvm directory:
image

danieladams456 commented

I had been using @GopinathMR's suggestion about installing just the JRE on top of Amazon Linux 2 docker image (image jre-github.) I'm not sure if over time the Corretto image has gotten smaller, or that method of install has gotten larger. Here are the current results. At this point, it seems like the best course of action is just to use the official image. A new JRE only image would be appreciated though!

REPOSITORY          TAG                 IMAGE ID            CREATED             SIZE
jre-github          latest              81f71de31f57        3 seconds ago       567MB
jre                 latest              572c1aa93618        4 minutes ago       416MB
amazoncorretto      8u232               5dc6819f98d7        18 hours ago        390MB
amazonlinux         2                   6ef285e58e33        18 hours ago        163MB

(my Dockerfile for the "jre" image trying to squash layers.)

FROM amazonlinux:2

# install amazon corretto 8 JRE
RUN yum update -y && \
  amazon-linux-extras enable corretto8 && \
  amazon-linux-extras install -y corretto8 && \
  yum clean all
  • 👍2
Bhaskar-Dastidar-E3295 commented

Is there any update on availability of jre only images for corretto ?

  • 👍16