Dockerfile

FROM openjdk:8u141-jdk

RUN apt-get update && apt-get install -y wget git curl zip && rm -rf /var/lib/apt/lists/*

ENV JENKINS_VERSION 2.184
RUN mkdir /usr/share/jenkins/
RUN useradd -d /home/jenkins -m -s /bin/bash jenkins

COPY init.groovy /tmp/WEB-INF/init.groovy.d/tcp-slave-angent-port.groovy
RUN curl -L http://mirrors.jenkins-ci.org/war/$JENKINS_VERSION/jenkins.war -o /usr/share/jenkins/jenkins.war \
  && cd /tmp && zip -g /usr/share/jenkins/jenkins.war WEB-INF/init.groovy.d/tcp-slave-angent-port.groovy && rm -rf /tmp/WEB-INF

ENV JENKINS_HOME /var/jenkins_home
RUN usermod -m -d "$JENKINS_HOME" jenkins && chown -R jenkins "$JENKINS_HOME"
VOLUME /var/jenkins_home

# for main web interface:
EXPOSE 8080

# will be used by attached slave agents:
EXPOSE 50000

USER jenkins

COPY jenkins.sh /usr/local/bin/jenkins.sh
ENTRYPOINT ["/usr/local/bin/jenkins.sh"]