Add Temurin JDK 24

Dockerfile

@@ -1,12 +1,17 @@
 # syntax=docker/dockerfile:1.6
 
+ARG LATEST_VERSION
+FROM eclipse-temurin:${LATEST_VERSION}-jdk-noble AS temurin-latest
+
 # Intermediate image used to prune cruft from JDKs and squash them all.
 FROM cimg/base:current-22.04 AS all-jdk
+ARG LATEST_VERSION
 
 COPY --from=eclipse-temurin:8-jdk-jammy /opt/java/openjdk /usr/lib/jvm/8
 COPY --from=eclipse-temurin:11-jdk-jammy /opt/java/openjdk /usr/lib/jvm/11
 COPY --from=eclipse-temurin:17-jdk-jammy /opt/java/openjdk /usr/lib/jvm/17
 COPY --from=eclipse-temurin:21-jdk-jammy /opt/java/openjdk /usr/lib/jvm/21
+COPY --from=temurin-latest /opt/java/openjdk /usr/lib/jvm/${LATEST_VERSION}
 
 COPY --from=azul/zulu-openjdk:7 /usr/lib/jvm/zulu7 /usr/lib/jvm/7
 COPY --from=azul/zulu-openjdk:8 /usr/lib/jvm/zulu8 /usr/lib/jvm/zulu8
@@ -51,20 +56,24 @@ RUN <<-EOT
 EOT
 
 FROM scratch AS default-jdk
+ARG LATEST_VERSION
 
 COPY --from=all-jdk /usr/lib/jvm/8 /usr/lib/jvm/8
 COPY --from=all-jdk /usr/lib/jvm/11 /usr/lib/jvm/11
 COPY --from=all-jdk /usr/lib/jvm/17 /usr/lib/jvm/17
 COPY --from=all-jdk /usr/lib/jvm/21 /usr/lib/jvm/21
+COPY --from=all-jdk /usr/lib/jvm/${LATEST_VERSION} /usr/lib/jvm/${LATEST_VERSION}
 
-# Base image with minimunm requirenents to build the project.
+# Base image with minimum requirements to build the project.
 # Based on CircleCI Base Image with Ubuntu 22.04.3 LTS, present in most runners.
 FROM cimg/base:current-22.04 AS base
+ARG LATEST_VERSION
+ENV LATEST_VERSION=${LATEST_VERSION}
 
 # https://docs.github.com/en/packages/learn-github-packages/connecting-a-repository-to-a-package
 LABEL org.opencontainers.image.source=https://github.com/DataDog/dd-trace-java-docker-build
 
-# Replace Docker Compose and yq versions by latest and remove docker-switch from CircleCI Base Image for security purposes
+# Replace Docker Compose and yq versions by latest and remove docker-switch from CircleCI Base Image for security purposes.
 RUN <<-EOT
 	set -eu
 	dockerPluginDir=/usr/local/lib/docker/cli-plugins
@@ -107,15 +116,16 @@ EOT
 # IBM specific env variables
 ENV IBM_JAVA_OPTIONS="-XX:+UseContainerSupport"
 
-#Set some odd looking variables, since their default values are wrong and it is unclear how they are used
+# Set some odd looking variables, since their default values are wrong and it is unclear how they are used.
 ENV JAVA_DEBIAN_VERSION=unused
 ENV JAVA_VERSION=unused
 
-# Setup environment variables to point to all jvms we have
+# Set up environment variables to point to all jvms we have.
 ENV JAVA_8_HOME=/usr/lib/jvm/8
 ENV JAVA_11_HOME=/usr/lib/jvm/11
 ENV JAVA_17_HOME=/usr/lib/jvm/17
 ENV JAVA_21_HOME=/usr/lib/jvm/21
+ENV JAVA_${LATEST_VERSION}_HOME=/usr/lib/jvm/${LATEST_VERSION}
 
 ENV JAVA_HOME=${JAVA_8_HOME}
 ENV PATH=${JAVA_HOME}/bin:${PATH}

README.md

@@ -1,4 +1,3 @@
-
 # dd-trace-java-docker-build
 
 Docker images for continuous integration jobs at [dd-trace-java](https://github.com/datadog/dd-trace-java).
@@ -8,8 +7,8 @@ Docker images for continuous integration jobs at [dd-trace-java](https://github.
 Pre-built images are available in [GitHub Container Registry](https://github.com/DataDog/dd-trace-java-docker-build/pkgs/container/dd-trace-java-docker-build).
 
 Image variants are available on a per JDK basis:
-- The `base` variant, and its aliases `8`, `11`, `17` and `21`, contains the base Eclipse Temurin JDK 8, 11, 17 and 21 versions,
-- The `zulu8`, `zulu11`, `oracle8`, `ibm8`, `semeru8`, `semeru11`, `semeru17`, `graalvm17` and `graalvm21` variants all contain the base JDKs in addition to their specific JDK from their name,
+- The `base` variant, and its aliases `8`, `11`, `17`, `21`, and `stable`, contains the base Eclipse Temurin JDK 8, 11, 17, 21, and latest stable JDK versions,
+- The `zulu8`, `zulu11`, `oracle8`, `ibm8`, `semeru8`, `semeru11`, `semeru17`, `graalvm17` and `graalvm21` variants all contain the base JDKs in addition to the specific JDK from their name,
 - The `latest` variant contains the base JDKs and all the above specific JDKs.
 
 ## Development

build

@@ -3,7 +3,7 @@ set -eu
 
 readonly IMAGE_NAME="ghcr.io/datadog/dd-trace-java-docker-build"
 
-readonly BASE_VARIANTS=(8 11 17 21)
+readonly BASE_VARIANTS=(8 11 17 21 stable) # add an ea variant once the early access build is available
 
 readonly VARIANTS=(
     7
@@ -45,6 +45,23 @@ function compute_metadata() {
     GIT_HEAD_REF="$(git show-ref --head --hash ^HEAD)"
 }
 
+function compute_latest_version() {
+    # Java versions are typically released towards the end of the month in March and September,
+    # so we use the version from the previous release cycle until the month after the release.
+    local base_year=2025
+    local base_version=23
+
+    version="$((base_version + ($(date +%Y) - base_year) * 2))"
+    if [ "$(date +%m)" -ge 4 ]; then
+        version="$((version + 1))"
+    fi
+    if [ "$(date +%m)" -ge 10 ]; then
+        version="$((version + 1))"
+    fi
+
+    export LATEST_VERSION="$version"
+}
+
 # docker build wrapper with common arguments
 # See https://github.com/opencontainers/image-spec/blob/main/annotations.md for common labels
 # See https://docs.github.com/en/packages/learn-github-packages/connecting-a-repository-to-a-package
@@ -54,6 +71,7 @@ function docker_build() {
     shift
     shift
     docker build \
+        --build-arg LATEST_VERSION=$LATEST_VERSION \
         --platform linux/amd64 \
         --label org.opencontainers.image.created="$BUILD_DATE" \
         --label org.opencontainers.image.source=https://github.com/DataDog/dd-trace-java-docker-build \
@@ -71,6 +89,7 @@ function image_name() {
 
 function do_build() {
     compute_metadata
+    compute_latest_version
     docker_build base "$(image_name base)"
     docker_build full "$(image_name latest)"
     if [ -n "${GITHUB_OUTPUT+unset}" ]; then
@@ -133,13 +152,19 @@ function do_inner_test() {
     local variant="${1}"
     variant_lower="${variant,,}"
     variant_upper="${variant^^}"
+    java_latest_home="JAVA_${LATEST_VERSION}_HOME"
     set -x
     "$JAVA_HOME/bin/java" -version
     "$JAVA_8_HOME/bin/java" -version
     "$JAVA_11_HOME/bin/java" -version
     "$JAVA_17_HOME/bin/java" -version
     "$JAVA_21_HOME/bin/java" -version
+    "${!java_latest_home}/bin/java" -version
     if [[ $variant != base && $variant != latest ]]; then
+        if [[ $variant == "stable" ]]; then
+            variant_lower="${LATEST_VERSION}"
+            variant_upper="${LATEST_VERSION}"
+        fi
         env_lower="JAVA_${variant_lower}_HOME"
         env_upper="JAVA_${variant_upper}_HOME"
         "${!env_lower}/bin/java" -version
@@ -148,8 +173,8 @@ function do_inner_test() {
 }
 
 function do_describe() {
-    local image
     compute_metadata
+    local image
     image="$(image_name latest)"
     docker run \
         --user "$(id -u):$(id -g)" \
@@ -179,7 +204,11 @@ function do_inner_describe() {
     echo "## JDKs"
     echo
     for variant in "${BASE_VARIANTS[@]}" "${VARIANTS[@]}"; do
-        variant_upper="${variant^^}"
+        if [[ $variant == "stable" ]]; then
+            variant_upper="${LATEST_VERSION}"
+        else
+            variant_upper="${variant^^}"
+        fi
         env_upper="JAVA_${variant_upper}_HOME"
         echo "* $env_upper"
         echo '```'