Note: the description for this image is longer than the Hub length limit of 25000, so has been trimmed. The full description can be found at https://github.com/docker-library/docs/tree/master/openjdk/README.md. See docker/hub-beta-feedback#238 for more information.
Supported tags and respective Dockerfile links
Simple Tags
13-ea-3-jdk-oraclelinux7,13-ea-3-oraclelinux7,13-ea-jdk-oraclelinux7,13-ea-oraclelinux7,13-jdk-oraclelinux7,13-oraclelinux7,13-ea-3-jdk-oracle,13-ea-3-oracle,13-ea-jdk-oracle,13-ea-oracle,13-jdk-oracle,13-oracle,13-ea-3-jdk,13-ea-3,13-ea-jdk,13-ea,13-jdk,13(13/jdk/oracle/Dockerfile)13-ea-1-jdk-alpine3.8,13-ea-1-alpine3.8,13-ea-jdk-alpine3.8,13-ea-alpine3.8,13-jdk-alpine3.8,13-alpine3.8,13-ea-1-jdk-alpine,13-ea-1-alpine,13-ea-jdk-alpine,13-ea-alpine,13-jdk-alpine,13-alpine(13/jdk/alpine/Dockerfile)13-ea-3-jdk-windowsservercore-ltsc2016,13-ea-3-windowsservercore-ltsc2016,13-ea-jdk-windowsservercore-ltsc2016,13-ea-windowsservercore-ltsc2016,13-jdk-windowsservercore-ltsc2016,13-windowsservercore-ltsc2016(13/jdk/windows/windowsservercore-ltsc2016/Dockerfile)13-ea-3-jdk-windowsservercore-1709,13-ea-3-windowsservercore-1709,13-ea-jdk-windowsservercore-1709,13-ea-windowsservercore-1709,13-jdk-windowsservercore-1709,13-windowsservercore-1709(13/jdk/windows/windowsservercore-1709/Dockerfile)13-ea-3-jdk-windowsservercore-1803,13-ea-3-windowsservercore-1803,13-ea-jdk-windowsservercore-1803,13-ea-windowsservercore-1803,13-jdk-windowsservercore-1803,13-windowsservercore-1803(13/jdk/windows/windowsservercore-1803/Dockerfile)13-ea-3-jdk-nanoserver-sac2016,13-ea-3-nanoserver-sac2016,13-ea-jdk-nanoserver-sac2016,13-ea-nanoserver-sac2016,13-jdk-nanoserver-sac2016,13-nanoserver-sac2016(13/jdk/windows/nanoserver-sac2016/Dockerfile)12-ea-27-jdk-oraclelinux7,12-ea-27-oraclelinux7,12-ea-jdk-oraclelinux7,12-ea-oraclelinux7,12-jdk-oraclelinux7,12-oraclelinux7,12-ea-27-jdk-oracle,12-ea-27-oracle,12-ea-jdk-oracle,12-ea-oracle,12-jdk-oracle,12-oracle,12-ea-27-jdk,12-ea-27,12-ea-jdk,12-ea,12-jdk,12(12/jdk/oracle/Dockerfile)12-ea-25-jdk-alpine3.8,12-ea-25-alpine3.8,12-ea-jdk-alpine3.8,12-ea-alpine3.8,12-jdk-alpine3.8,12-alpine3.8,12-ea-25-jdk-alpine,12-ea-25-alpine,12-ea-jdk-alpine,12-ea-alpine,12-jdk-alpine,12-alpine(12/jdk/alpine/Dockerfile)12-ea-27-jdk-windowsservercore-ltsc2016,12-ea-27-windowsservercore-ltsc2016,12-ea-jdk-windowsservercore-ltsc2016,12-ea-windowsservercore-ltsc2016,12-jdk-windowsservercore-ltsc2016,12-windowsservercore-ltsc2016(12/jdk/windows/windowsservercore-ltsc2016/Dockerfile)12-ea-27-jdk-windowsservercore-1709,12-ea-27-windowsservercore-1709,12-ea-jdk-windowsservercore-1709,12-ea-windowsservercore-1709,12-jdk-windowsservercore-1709,12-windowsservercore-1709(12/jdk/windows/windowsservercore-1709/Dockerfile)12-ea-27-jdk-windowsservercore-1803,12-ea-27-windowsservercore-1803,12-ea-jdk-windowsservercore-1803,12-ea-windowsservercore-1803,12-jdk-windowsservercore-1803,12-windowsservercore-1803(12/jdk/windows/windowsservercore-1803/Dockerfile)12-ea-27-jdk-nanoserver-sac2016,12-ea-27-nanoserver-sac2016,12-ea-jdk-nanoserver-sac2016,12-ea-nanoserver-sac2016,12-jdk-nanoserver-sac2016,12-nanoserver-sac2016(12/jdk/windows/nanoserver-sac2016/Dockerfile)11.0.1-jdk-oraclelinux7,11.0.1-oraclelinux7,11.0-jdk-oraclelinux7,11.0-oraclelinux7,11-jdk-oraclelinux7,11-oraclelinux7,jdk-oraclelinux7,oraclelinux7,11.0.1-jdk-oracle,11.0.1-oracle,11.0-jdk-oracle,11.0-oracle,11-jdk-oracle,11-oracle,jdk-oracle,oracle(11/jdk/oracle/Dockerfile)11.0.1-jdk-stretch,11.0.1-stretch,11.0-jdk-stretch,11.0-stretch,11-jdk-stretch,11-stretch,jdk-stretch,stretch,11.0.1-jdk,11.0.1,11.0-jdk,11.0,11-jdk,11,jdk,latest(11/jdk/Dockerfile)11.0.1-jdk-slim-stretch,11.0.1-slim-stretch,11.0-jdk-slim-stretch,11.0-slim-stretch,11-jdk-slim-stretch,11-slim-stretch,jdk-slim-stretch,slim-stretch,11.0.1-jdk-slim,11.0.1-slim,11.0-jdk-slim,11.0-slim,11-jdk-slim,11-slim,jdk-slim,slim(11/jdk/slim/Dockerfile)11.0.1-jdk-windowsservercore-ltsc2016,11.0.1-windowsservercore-ltsc2016,11.0-jdk-windowsservercore-ltsc2016,11.0-windowsservercore-ltsc2016,11-jdk-windowsservercore-ltsc2016,11-windowsservercore-ltsc2016,jdk-windowsservercore-ltsc2016,windowsservercore-ltsc2016(11/jdk/windows/windowsservercore-ltsc2016/Dockerfile)11.0.1-jdk-windowsservercore-1709,11.0.1-windowsservercore-1709,11.0-jdk-windowsservercore-1709,11.0-windowsservercore-1709,11-jdk-windowsservercore-1709,11-windowsservercore-1709,jdk-windowsservercore-1709,windowsservercore-1709(11/jdk/windows/windowsservercore-1709/Dockerfile)11.0.1-jdk-windowsservercore-1803,11.0.1-windowsservercore-1803,11.0-jdk-windowsservercore-1803,11.0-windowsservercore-1803,11-jdk-windowsservercore-1803,11-windowsservercore-1803,jdk-windowsservercore-1803,windowsservercore-1803(11/jdk/windows/windowsservercore-1803/Dockerfile)11.0.1-jdk-nanoserver-sac2016,11.0.1-nanoserver-sac2016,11.0-jdk-nanoserver-sac2016,11.0-nanoserver-sac2016,11-jdk-nanoserver-sac2016,11-nanoserver-sac2016,jdk-nanoserver-sac2016,nanoserver-sac2016(11/jdk/windows/nanoserver-sac2016/Dockerfile)11.0.1-jre-stretch,11.0-jre-stretch,11-jre-stretch,jre-stretch,11.0.1-jre,11.0-jre,11-jre,jre(11/jre/Dockerfile)11.0.1-jre-slim-stretch,11.0-jre-slim-stretch,11-jre-slim-stretch,jre-slim-stretch,11.0.1-jre-slim,11.0-jre-slim,11-jre-slim,jre-slim(11/jre/slim/Dockerfile)8u181-jdk-stretch,8u181-stretch,8-jdk-stretch,8-stretch,8u181-jdk,8u181,8-jdk,8(8/jdk/Dockerfile)8u181-jdk-slim-stretch,8u181-slim-stretch,8-jdk-slim-stretch,8-slim-stretch,8u181-jdk-slim,8u181-slim,8-jdk-slim,8-slim(8/jdk/slim/Dockerfile)8u191-jdk-alpine3.8,8u191-alpine3.8,8-jdk-alpine3.8,8-alpine3.8,8u191-jdk-alpine,8u191-alpine,8-jdk-alpine,8-alpine(8/jdk/alpine/Dockerfile)8u191-jdk-windowsservercore-ltsc2016,8u191-windowsservercore-ltsc2016,8-jdk-windowsservercore-ltsc2016,8-windowsservercore-ltsc2016(8/jdk/windows/windowsservercore-ltsc2016/Dockerfile)8u191-jdk-windowsservercore-1709,8u191-windowsservercore-1709,8-jdk-windowsservercore-1709,8-windowsservercore-1709(8/jdk/windows/windowsservercore-1709/Dockerfile)8u191-jdk-windowsservercore-1803,8u191-windowsservercore-1803,8-jdk-windowsservercore-1803,8-windowsservercore-1803(8/jdk/windows/windowsservercore-1803/Dockerfile)8u191-jdk-nanoserver-sac2016,8u191-nanoserver-sac2016,8-jdk-nanoserver-sac2016,8-nanoserver-sac2016(8/jdk/windows/nanoserver-sac2016/Dockerfile)8u181-jre-stretch,8-jre-stretch,8u181-jre,8-jre(8/jre/Dockerfile)8u181-jre-slim-stretch,8-jre-slim-stretch,8u181-jre-slim,8-jre-slim(8/jre/slim/Dockerfile)8u191-jre-alpine3.8,8-jre-alpine3.8,8u191-jre-alpine,8-jre-alpine(8/jre/alpine/Dockerfile)7u181-jdk-jessie,7u181-jessie,7-jdk-jessie,7-jessie,7u181-jdk,7u181,7-jdk,7(7/jdk/Dockerfile)7u181-jdk-slim-jessie,7u181-slim-jessie,7-jdk-slim-jessie,7-slim-jessie,7u181-jdk-slim,7u181-slim,7-jdk-slim,7-slim(7/jdk/slim/Dockerfile)7u181-jdk-alpine3.8,7u181-alpine3.8,7-jdk-alpine3.8,7-alpine3.8,7u181-jdk-alpine,7u181-alpine,7-jdk-alpine,7-alpine(7/jdk/alpine/Dockerfile)7u181-jre-jessie,7-jre-jessie,7u181-jre,7-jre(7/jre/Dockerfile)7u181-jre-slim-jessie,7-jre-slim-jessie,7u181-jre-slim,7-jre-slim(7/jre/slim/Dockerfile)7u181-jre-alpine3.8,7-jre-alpine3.8,7u181-jre-alpine,7-jre-alpine(7/jre/alpine/Dockerfile)
Shared Tags
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13-ea-3-jdk-windowsservercore,13-ea-3-windowsservercore,13-ea-jdk-windowsservercore,13-ea-windowsservercore,13-jdk-windowsservercore,13-windowsservercore:13-ea-3-jdk-windowsservercore-ltsc2016(13/jdk/windows/windowsservercore-ltsc2016/Dockerfile)13-ea-3-jdk-windowsservercore-1709(13/jdk/windows/windowsservercore-1709/Dockerfile)13-ea-3-jdk-windowsservercore-1803(13/jdk/windows/windowsservercore-1803/Dockerfile)
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13-ea-3-jdk-nanoserver,13-ea-3-nanoserver,13-ea-jdk-nanoserver,13-ea-nanoserver,13-jdk-nanoserver,13-nanoserver:13-ea-3-jdk-nanoserver-sac2016(13/jdk/windows/nanoserver-sac2016/Dockerfile)
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12-ea-27-jdk-windowsservercore,12-ea-27-windowsservercore,12-ea-jdk-windowsservercore,12-ea-windowsservercore,12-jdk-windowsservercore,12-windowsservercore:12-ea-27-jdk-windowsservercore-ltsc2016(12/jdk/windows/windowsservercore-ltsc2016/Dockerfile)12-ea-27-jdk-windowsservercore-1709(12/jdk/windows/windowsservercore-1709/Dockerfile)12-ea-27-jdk-windowsservercore-1803(12/jdk/windows/windowsservercore-1803/Dockerfile)
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12-ea-27-jdk-nanoserver,12-ea-27-nanoserver,12-ea-jdk-nanoserver,12-ea-nanoserver,12-jdk-nanoserver,12-nanoserver:12-ea-27-jdk-nanoserver-sac2016(12/jdk/windows/nanoserver-sac2016/Dockerfile)
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11.0.1-jdk-windowsservercore,11.0.1-windowsservercore,11.0-jdk-windowsservercore,11.0-windowsservercore,11-jdk-windowsservercore,11-windowsservercore,jdk-windowsservercore,windowsservercore:11.0.1-jdk-windowsservercore-ltsc2016(11/jdk/windows/windowsservercore-ltsc2016/Dockerfile)11.0.1-jdk-windowsservercore-1709(11/jdk/windows/windowsservercore-1709/Dockerfile)11.0.1-jdk-windowsservercore-1803(11/jdk/windows/windowsservercore-1803/Dockerfile)
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11.0.1-jdk-nanoserver,11.0.1-nanoserver,11.0-jdk-nanoserver,11.0-nanoserver,11-jdk-nanoserver,11-nanoserver,jdk-nanoserver,nanoserver:11.0.1-jdk-nanoserver-sac2016(11/jdk/windows/nanoserver-sac2016/Dockerfile)
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8u191-jdk-windowsservercore,8u191-windowsservercore,8-jdk-windowsservercore,8-windowsservercore:8u191-jdk-windowsservercore-ltsc2016(8/jdk/windows/windowsservercore-ltsc2016/Dockerfile)8u191-jdk-windowsservercore-1709(8/jdk/windows/windowsservercore-1709/Dockerfile)8u191-jdk-windowsservercore-1803(8/jdk/windows/windowsservercore-1803/Dockerfile)
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8u191-jdk-nanoserver,8u191-nanoserver,8-jdk-nanoserver,8-nanoserver:8u191-jdk-nanoserver-sac2016(8/jdk/windows/nanoserver-sac2016/Dockerfile)
Quick reference
Where to get help:
the Docker Community Forums, the Docker Community Slack, or Stack OverflowWhere to file issues:
https://github.com/docker-library/openjdk/issuesMaintained by:
the Docker CommunitySupported architectures: (more info)
amd64,arm32v5,arm32v6,arm32v7,arm64v8,i386,ppc64le,s390x,windows-amd64Published image artifact details:
repo-info repo'srepos/openjdk/directory (history)
(image metadata, transfer size, etc)Image updates:
official-images PRs with labellibrary/openjdk
official-images repo'slibrary/openjdkfile (history)Source of this description:
docs repo'sopenjdk/directory (history)Supported Docker versions:
the latest release (down to 1.6 on a best-effort basis)
What is OpenJDK?
OpenJDK (Open Java Development Kit) is a free and open source implementation of the Java Platform, Standard Edition (Java SE). OpenJDK is the official reference implementation of Java SE since version 7.
wikipedia.org/wiki/OpenJDK
Java is a registered trademark of Oracle and/or its affiliates.
How to use this image
Start a Java instance in your app
The most straightforward way to use this image is to use a Java container as both the build and runtime environment. In your Dockerfile, writing something along the lines of the following will compile and run your project:
FROM openjdk:7
COPY . /usr/src/myapp
WORKDIR /usr/src/myapp
RUN javac Main.java
CMD ["java", "Main"]
You can then run and build the Docker image:
$ docker build -t my-java-app .
$ docker run -it --rm --name my-running-app my-java-app
Compile your app inside the Docker container
There may be occasions where it is not appropriate to run your app inside a container. To compile, but not run your app inside the Docker instance, you can write something like:
$ docker run --rm -v "$PWD":/usr/src/myapp -w /usr/src/myapp openjdk:7 javac Main.java
This will add your current directory as a volume to the container, set the working directory to the volume, and run the command javac Main.java which will tell Java to compile the code in Main.java and output the Java class file to Main.class.
Make JVM respect CPU and RAM limits
On startup JVM tries to detect the number of available CPU cores and the amount of RAM to adjust its internal parameters (like the number of garbage collector threads to spawn) accordingly. When container is run with limited CPU/RAM, standard system API, used by JVM for probing, will return host-wide values. This can cause excessive CPU usage and memory allocation errors with older versions of JVM.
Inside Linux containers, OpenJDK versions 8 and later can correctly detect container-limited number of CPU cores and available RAM. In OpenJDK 11 this is turned on by default. In versions 8, 9, and 10 you have to enable the detection of container-limited amount of RAM using the following options:
$ java -XX:+UnlockExperimentalVMOptions -XX:+UseCGroupMemoryLimitForHeap ...
Inside Windows Server (non-Hyper-V) containers, limit for number of available CPU cores does not work (is ignored by Host Compute Service). To set such limit manually, JVM can be started the following way:
$ start /b /wait /affinity 0x3 path/to/java.exe ...
In this example CPU affinity hex mask 0x3 will limit JVM to 2 CPU cores.
RAM limit is supported by Windows Server containers, but currently JVM cannot detect it. To prevent excessive memory allocations, -XX:MaxRAM=... option must be specified with the value that is not bigger than a containers RAM limit.
Environment variables with periods in their names
Some shells (notably, the BusyBox /bin/sh included in Alpine Linux) do not support environment variables with periods in the names (which are technically not POSIX compliant), and thus strip them instead of passing them through (as Bash does). If your application requires environment variables of this form, either use CMD ["java", ...] directly (no shell), or (install and) use Bash explicitly instead of /bin/sh.
Image Variants
The openjdk images come in many flavors, each designed for a specific use case.
openjdk:
This is the defacto image. If you are unsure about what your needs are, you probably want to use this one. It is designed to be used both as a throw away container (mount your source code and start the container to start your app), as well as the base to build other images off of.
Some of these tags may have names like jessie or stretch in them. These are the suite code names for releases of Debian and indicate which release the image is based on.
openjdk:-alpine
This image is based on the popular Alpine Linux project, available in the alpine official image. Alpine Linux is much smaller than most distribution base images (~5MB), and thus leads to much slimmer images in general.
This variant is highly recommended when final image size being as small as possible is desired. The main caveat to note is that it does use musl libc instead of glibc and friends, so certain software might run into issues depending on the depth of their libc requirements. However, most softwar