Jenkins

Dockerfile

# -------------------------------------------------------------------
# docker build -t juniorz/jenkins git://gist.github.com/7494802.git
# -------------------------------------------------------------------
FROM phusion/baseimage:0.9.1
MAINTAINER Reinaldo Junior <juniorz@gmail.com>

RUN apt-get update && apt-get upgrade -y

# Remove authentication rights for insecure_key.
RUN echo /bin/sh -c \"rm -f /root/.ssh/authorized_keys /home/*/.ssh/authorized_keys\" > /sbin/remove_authorized_keys &&\
    chmod 0700 /sbin/remove_authorized_keys

# To remove the key, run:
# curl https://raw.github.com/phusion/baseimage-docker/master/image/insecure_key |\
#    ssh -i /dev/stdin root@$(docker inspect $CID | grep IPAddress | cut -d '"' -f 4) /sbin/remove_authorized_keys

# Set correct environment variables.
ENV HOME /root

# Installs jenkins (http://pkg.jenkins-ci.org/debian/)
#   - `RUNLEVEL=1` prevents the init.d service to start (http://askubuntu.com/a/75560)
#   - `LC_ALL=en_US.UTF-8` and `DEBIAN_FRONTEND=noninteractive` provide defaults to unattended installation
RUN curl http://pkg.jenkins-ci.org/debian/jenkins-ci.org.key | apt-key add - &&\
    echo deb http://pkg.jenkins-ci.org/debian binary/ > /etc/apt/sources.list.d/jenkins.list &&\
    apt-get update -y &&\
    mkdir -p /var/lib/jenkins /var/run/jenkins &&\
    export LC_ALL=en_US.UTF-8 DEBIAN_FRONTEND=noninteractive RUNLEVEL=0 &&\
    apt-get install -y --no-install-recommends jenkins

# Disables init
RUN /etc/init.d/jenkins stop &&\
    update-rc.d -f jenkins remove &&\
    rm /etc/init.d/jenkins

# Adds jenkins service
RUN mkdir /etc/service/jenkins
ADD jenkins.sh /etc/service/jenkins/run
RUN chmod 0755 /etc/service/jenkins/run

# Clean up APT when done.
RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*

# Use baseimage-docker's init process.
CMD ["/sbin/my_init"]

EXPOSE 8080

jenkins.sh

#!/bin/sh

set -xeu

# From /etc/init.d/jenkins

JAVA_ARGS=""
[ -r /etc/default/jenkins ] && . /etc/default/jenkins

exec chpst -u $JENKINS_USER $JAVA $JAVA_ARGS -jar $JENKINS_WAR $JENKINS_ARGS >> $JENKINS_LOG 2>&1