Dockerfile

# 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.
ARG JAVA_VERSION=17.0.8.1_1
ARG ALPINE_TAG=3.18.4
FROM eclipse-temurin:"${JAVA_VERSION}"-jdk-alpine AS jre-build

RUN if [ "$TARGETPLATFORM" != 'linux/arm/v7' ]; then \
    case "$(jlink --version 2>&1)" in \
      # jlink version 11 has less features than JDK17+
      "11."*) strip_java_debug_flags="--strip-debug" ;; \
      *) strip_java_debug_flags="--strip-java-debug-attributes" ;; \
    esac; \
    jlink \
      --add-modules ALL-MODULE-PATH \
      "$strip_java_debug_flags" \
      --no-man-pages \
      --no-header-files \
      --compress=2 \
      --output /javaruntime; \
  else \
    cp -r /opt/java/openjdk /javaruntime; \
  fi

FROM alpine:"${ALPINE_TAG}" AS build

ARG user=jenkins
ARG group=jenkins
ARG uid=1000
ARG gid=1000

RUN addgroup -g "${gid}" "${group}" \
  && adduser -h /home/"${user}" -u "${uid}" -G "${group}" -D "${user}"

ARG AGENT_WORKDIR=/home/"${user}"/agent

ENV LANG='en_US.UTF-8' LANGUAGE='en_US:en' LC_ALL='en_US.UTF-8'
ENV TZ=Etc/UTC

## Always use the latest Alpine packages: no need for versions
# hadolint ignore=DL3018
RUN apk add --no-cache \
      bash \
      musl-dev \
      clang \
      libstdc++-dev \
      cmake \
      make \
      pkgconf \
      ccache \
      curl-dev \
      curl \
      python3 \
      zlib-dev \
      boost-dev \
      git \
      git-lfs \
      musl-locales \
      openssh-client \
      openssl \
      procps \
      tzdata \
      tzdata-utils \
    && rm -rf /tmp/*.apk /tmp/gcc /tmp/gcc-libs.tar* /tmp/libz /tmp/libz.tar.xz /var/cache/apk/*

ARG VERSION=3192.v713e3b_039fb_e
ADD --chown="${user}":"${group}" "https://repo.jenkins-ci.org/public/org/jenkins-ci/main/remoting/${VERSION}/remoting-${VERSION}.jar" /usr/share/jenkins/agent.jar
RUN chmod 0644 /usr/share/jenkins/agent.jar \
  && ln -sf /usr/share/jenkins/agent.jar /usr/share/jenkins/slave.jar


ENV JAVA_HOME=/opt/java/openjdk
COPY --from=jre-build /javaruntime "$JAVA_HOME"
ENV PATH="${JAVA_HOME}/bin:${PATH}"

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/"${user}"
ENV user=${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"