blueapple/openjdk11-alpine repository overview

⁠OpenJDK and Docker

Dockerfiles and build scripts for generating various Docker Images related to OpenJDK. Currently this builds OpenJDK images with hotspot and Eclipse OpenJ9 on Ubuntu and Alpine Linux.

⁠Supported Architectures

• Hotspot is supported on aarch64, ppc64le, s390x and x86_64.
• Eclipse OpenJ9 is supported on ppc64le, s390x and x86_64.

⁠Mac OS X

Please note you'll need to upgrade bash shell on Mac OS X⁠ if you're to use our Docker images on there.

⁠License

The Dockerfiles and associated scripts found in this project are licensed under the Apache License 2.0.⁠.

⁠Supported builds and build types

⁠Legend

• ${os} = alpine|debian|ubi-minimal|ubuntu|windows
• ${slim-os} = alpine|debian|ubuntu
• ${jdk-version} Eg. jdk-11.0.3_7, jdk-12.33_openj9-0.13.0
• ${jre-version} Eg. jre-11.0.3_7, jre-12.33_openj9-0.13.0

1. There are two kinds of build images
   • Release build images
     • These are release tested versions of the JDKs.
     • Associated tags:

       - latest, ${os},           ${jdk-version},      ${jdk-version}-${os}
       - jre,    ${os}-jre,       ${jre-version},      ${jre-version}-${os}
       - slim,   ${slim-os}-slim, ${jdk-version}-slim, ${jdk-version}-${slim-os}-slim
     

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   • Nightly build images
     • These are nightly builds with minimal testing.
     • Associated tags:

       - nightly,      ${os}-nightly,           ${jdk-version}-${os}-nightly
       - jre-nightly,  ${os}-jre-nightly,       ${jre-version}-${os}-nightly
       - nightly-slim, ${slim-os}-nightly-slim, ${jdk-version}-${slim-os}-nightly-slim
     

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2. There are two build types
   • Full build images
     • This consists of the full JDK.
     • Associated tags:

       - latest,      ${os},             ${jdk-version},         ${jdk-version}-${os}
       - jre,         ${os}-jre,         ${jre-version},         ${jre-version}-${os}
       - nightly,     ${os}-nightly,     ${jdk-version}-nightly, ${jdk-version}-${os}-nightly
       - jre-nightly, ${os}-jre-nightly, ${jre-version}-nightly, ${jre-version}-${os}-nightly
     

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   • Slim build images
     • These are stripped down JDK builds that remove functionality not typically needed while running in a cloud. See the ./slim-java.sh⁠ script to see what is stripped out.
     • Associated tags:

       - slim,         ${slim-os}-slim,         ${jdk-version}-slim,         ${jdk-version}-${slim-os}-slim
       - nightly-slim, ${slim-os}-nightly-slim, ${jdk-version}-nightly-slim, ${jdk-version}-${slim-os}-nightly-slim
     

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3. There are also JDK and JRE only variants
   • JDK build images
     • This consists of the full JDK.
     • Associated tags:

       - latest,       ${os},                   ${jdk-version},              ${jdk-version}-${os}
       - slim,         ${slim-os}-slim,         ${jdk-version}-slim,         ${jdk-version}-${slim-os}-slim
       - nightly,      ${os}-nightly,           ${jdk-version}-nightly,      ${jdk-version}-${os}-nightly
       - nightly-slim, ${slim-os}-nightly-slim, ${jdk-version}-nightly-slim, ${jdk-version}-${slim-os}-nightly-slim
     

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   • JRE build images
     • This consists of only JRE.
     • Associated tags:

       - jre,         ${os}-jre,         ${jre-version},         ${jre-version}-${os}
       - jre-nightly, ${os}-jre-nightly, ${jre-version}-nightly, ${jre-version}-${os}-nightly
     

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Here is a listing of the image sizes for the various build images and types for JDK Version 8

Notes:

1. The alpine-slim images are about 60% smaller than the latest images.
2. The Alpine Linux and the slim images are not yet TCK certified.

⁠Build and push the Images with multi-arch support

# Steps 1-2 needs to be run on all supported arches.
# i.e aarch64, ppc64le, s390x and x86_64.

# 1. Clone this github repo
     $ git clone https://github.com/AdoptOpenJDK/openjdk-docker

# 2. Build images and tag them appropriately
     $ cd openjdk-docker
     $ ./build_all.sh

# Steps 3 needs to be run only on x86_64

# 3. build_all.sh should be run on all supported architectures to build and push images to the
#    docker registry. The images should now be available on hub.docker.com but without multi-arch
#    support. To add multi-arch support, we need to generate the right manifest lists and push them
#    to hub.docker.com. The script generate_manifest_script.sh can be used to
#    generate the right manifest commands. This needs to be run only on x86_64 after docker images
#    for all architecures have been built and made available on hub.docker.com
     $ ./update_manifest_all.sh

# We should now have the proper manifest lists pushed to hub.docker.com to support multi-arch pulls.

⁠Linting dockerfiles (via hadolint⁠)

To lint generated dockerfiles run ./linter.sh⁠ - script will download hadolint binary and check all dockerfiles.

⁠Info on other scripts

# Run generate_latest_sums.sh to get the shasums for the latest binaries on adoptopenjdk.net
  $ ./generate_latest_sums.sh $version

# You should now have two files, hotspot_shasums_latest.sh and openj9_shasums_latest.sh. These will
# have the shasums for the latest version for each of the supported arches for hotspot and
# Eclipse OpenJ9 respectively.

# You can now run update_multiarch.sh to generate the Dockerfiles for all supported arches for both
# hotspot and Eclipse OpenJ9.
  $ ./update_multiarch.sh $version

# build_latest.sh will do all of the above and build the docker images for the current arch with the
# right set of tags