Add Java 17 Alpine (#222)

17/alpine/Dockerfile

@@ -0,0 +1,82 @@
+# The MIT License
+#
+#  Copyright (c) 2015-2020, CloudBees, Inc. and other Jenkins contributors
+#
+#  Permission is hereby granted, free of charge, to any person obtaining a copy
+#  of this software and associated documentation files (the "Software"), to deal
+#  in the Software without restriction, including without limitation the rights
+#  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+#  copies of the Software, and to permit persons to whom the Software is
+#  furnished to do so, subject to the following conditions:
+#
+#  The above copyright notice and this permission notice shall be included in
+#  all copies or substantial portions of the Software.
+#
+#  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+#  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+#  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+#  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+#  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+#  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+#  THE SOFTWARE.
+
+FROM alpine:3.15.0 as jre-build
+
+RUN apk add --update --no-cache openjdk17-jdk openjdk17-jmods
+
+# Generate smaller java runtime without unneeded files
+# for now we include the full module path to maintain compatibility
+# while still saving space (approx 200mb from the full distribution)
+RUN jlink \
+         --module-path /usr/lib/jvm/default-jvm/jmods \
+         --add-modules ALL-MODULE-PATH \
+         --strip-java-debug-attributes \
+         --no-man-pages \
+         --no-header-files \
+         --compress=2 \
+         --output /javaruntime
+
+FROM alpine:3.15.0
+
+ARG VERSION=4.11.2
+ARG user=jenkins
+ARG group=jenkins
+ARG uid=1000
+ARG gid=1000
+
+RUN addgroup -g ${gid} ${group}
+RUN adduser -h /home/${user} -u ${uid} -G ${group} -D ${user}
+LABEL Description="This is a base image, which provides the Jenkins agent executable (agent.jar)" Vendor="Jenkins project" Version="${VERSION}"
+
+ARG AGENT_WORKDIR=/home/${user}/agent
+
+ENV LANG='en_US.UTF-8' LANGUAGE='en_US:en' LC_ALL='en_US.UTF-8'
+
+RUN apk add --update --no-cache curl bash git git-lfs musl-locales openssh-client openssl procps \
+  && curl --create-dirs -fsSLo /usr/share/jenkins/agent.jar https://repo.jenkins-ci.org/public/org/jenkins-ci/main/remoting/${VERSION}/remoting-${VERSION}.jar \
+  && chmod 755 /usr/share/jenkins \
+  && chmod 644 /usr/share/jenkins/agent.jar \
+  && ln -sf /usr/share/jenkins/agent.jar /usr/share/jenkins/slave.jar \
+  && apk del --purge curl \
+  && rm -rf /tmp/*.apk /tmp/gcc /tmp/gcc-libs.tar* /tmp/libz /tmp/libz.tar.xz /var/cache/apk/*
+
+ENV JAVA_HOME=/opt/java/openjdk
+ENV PATH "${JAVA_HOME}/bin:${PATH}"
+COPY --from=jre-build /javaruntime $JAVA_HOME
+
+USER ${user}
+ENV AGENT_WORKDIR=${AGENT_WORKDIR}
+RUN mkdir /home/${user}/.jenkins && mkdir -p ${AGENT_WORKDIR}
+
+VOLUME /home/${user}/.jenkins
+VOLUME ${AGENT_WORKDIR}
+WORKDIR /home/${user}
+
+LABEL \
+    org.opencontainers.image.vendor="Jenkins project" \
+    org.opencontainers.image.title="Official Jenkins Agent Base Docker image" \
+    org.opencontainers.image.description="This is a base image, which provides the Jenkins agent executable (agent.jar)" \
+    org.opencontainers.image.version="${VERSION}" \
+    org.opencontainers.image.url="https://www.jenkins.io/" \
+    org.opencontainers.image.source="https://github.com/jenkinsci/docker-agent" \
+    org.opencontainers.image.licenses="MIT"

docker-bake.hcl

@@ -2,6 +2,7 @@ group "linux" {
   targets = [
     "alpine_jdk8",
     "alpine_jdk11",
+    "alpine_jdk17",
     "archlinux_jdk11",
     "debian_jdk8",
     "debian_jdk11",
@@ -100,6 +101,20 @@ target "alpine_jdk11" {
   platforms = ["linux/amd64"]
 }
 
+target "alpine_jdk17" {
+  dockerfile = "17/alpine/Dockerfile"
+  context = "."
+  args = {
+    VERSION = REMOTING_VERSION
+  }
+  tags = [
+    equal(ON_TAG, "true") ? "${REGISTRY}/${JENKINS_REPO}:${REMOTING_VERSION}-${BUILD_NUMBER}-alpine-jdk17": "",
+    "${REGISTRY}/${JENKINS_REPO}:alpine-jdk17-preview",
+    "${REGISTRY}/${JENKINS_REPO}:latest-alpine-jdk17-preview",
+  ]
+  platforms = ["linux/amd64"]
+}
+
 target "debian_jdk8" {
   dockerfile = "8/bullseye/Dockerfile"
   context = "."