Added docker jdk21 build configuration (#7900)

build.gradle

@@ -496,7 +496,7 @@ tasks.register("dockerDistUntar") {
 }
 
 def dockerImage = "consensys/teku"
-def dockerJdkVariants = [ "jdk17" ]
+def dockerJdkVariants = [ "jdk17", "jdk21" ]
 def dockerBuildDir = "build/docker-teku/"
 
 def executableAndArg = System.getProperty('os.name').toLowerCase().contains('windows') ? ["cmd", "/c"] : ["sh", "-c"]

docker/jdk17/Dockerfile

@@ -46,8 +46,8 @@ ARG VCS_REF
 ARG VERSION
 LABEL org.label-schema.build-date=$BUILD_DATE \
       org.label-schema.name="Teku" \
-      org.label-schema.description="Ethereum 2.0 Beacon Chain Client" \
-      org.label-schema.url="https://consensys.net/knowledge-base/ethereum-2/teku/" \
+      org.label-schema.description="Ethereum Consensus Client" \
+      org.label-schema.url="https://docs.teku.consensys.io/" \
       org.label-schema.vcs-ref=$VCS_REF \
       org.label-schema.vcs-url="https://github.com/Consensys/teku.git" \
       org.label-schema.vendor="Consensys" \

docker/jdk21/Dockerfile

@@ -0,0 +1,55 @@
+FROM eclipse-temurin:21 as jre-build
+
+# Create a custom Java runtime
+RUN JAVA_TOOL_OPTIONS="-Djdk.lang.Process.launchMechanism=vfork" $JAVA_HOME/bin/jlink \
+         --add-modules ALL-MODULE-PATH \
+         --strip-debug \
+         --no-man-pages \
+         --no-header-files \
+         --compress=2 \
+         --output /javaruntime
+
+FROM ubuntu:22.04
+ENV JAVA_HOME=/opt/java/openjdk
+ENV PATH "${JAVA_HOME}/bin:${PATH}"
+COPY --from=jre-build /javaruntime $JAVA_HOME
+
+RUN apt-get -y update && apt-get -y upgrade && apt-get -y install curl libc-bin libc6 && rm -rf /var/lib/api/lists/*
+RUN adduser --disabled-password --gecos "" --home /opt/teku teku && \
+    chown teku:teku /opt/teku && \
+    chmod 0755 /opt/teku
+
+USER teku
+WORKDIR /opt/teku
+
+# copy application (with libraries inside)
+COPY --chown=teku:teku teku /opt/teku/
+
+# Default to UTF-8 locale
+ENV LANG C.UTF-8
+
+ENV TEKU_REST_API_INTERFACE="0.0.0.0"
+ENV TEKU_VALIDATOR_API_INTERFACE="0.0.0.0"
+ENV TEKU_METRICS_INTERFACE="0.0.0.0"
+
+# List Exposed Ports
+# Metrics, Rest API, LibP2P, Discv5
+EXPOSE 8008 5051 9000 9000/udp
+
+# specify default command
+ENTRYPOINT ["/opt/teku/bin/teku"]
+
+
+# Build-time metadata as defined at http://label-schema.org
+ARG BUILD_DATE
+ARG VCS_REF
+ARG VERSION
+LABEL org.label-schema.build-date=$BUILD_DATE \
+      org.label-schema.name="Teku" \
+      org.label-schema.description="Ethereum Consensus Client" \
+      org.label-schema.url="https://docs.teku.consensys.io/" \
+      org.label-schema.vcs-ref=$VCS_REF \
+      org.label-schema.vcs-url="https://github.com/Consensys/teku.git" \
+      org.label-schema.vendor="Consensys" \
+      org.label-schema.version=$VERSION \
+      org.label-schema.schema-version="1.0"