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ghcr.io/openzipkin/java is a minimal OpenJDK Alpine Linux image.

GitHub Container Registry: ghcr.io/openzipkin/java includes:

• master tag: latest commit
• MAJOR.MINOR.PATCH tag: release corresponding to a Current OpenJDK Version

Tags ending in -jre include only a JRE where unqualified tags include the full JDK, Maven, and a few build utilities.

Using this image

This is an internal base layer primarily used in zipkin.

To try the image, run the java -version command:

docker run --rm ghcr.io/openzipkin/java:15.0.6_p5-r0 -version
openjdk version "15.0.6" 2022-01-18
OpenJDK Runtime Environment (build 15.0.6+5-alpine-r0)
OpenJDK 64-Bit Server VM (build 15.0.6+5-alpine-r0, mixed mode)

Release process

Build the Dockerfile using the current version without the revision classifier from here:

• https://pkgs.alpinelinux.org/packages?name=openjdk15

# Note 15.0.6_p5 not 15.0.6_p5-r0!
./build-bin/build 15.0.6_p5

Next, verify the built image matches that version:

docker run --rm openzipkin/java:test -version
openjdk version "15.0.6" 2022-01-18
OpenJDK Runtime Environment (build 15.0.6+5-alpine-r0)
OpenJDK 64-Bit Server VM (build 15.0.6+5-alpine-r0, mixed mode, sharing)

To release the image, push a tag matching the arg to build-bin/build (ex 15.0.6_p5). This triggers a GitHub Actions job to push the image.