Dockerfile

# This Dockerfile is used to build an image containing basic stuff to be used as a Jenkins slave build node.
FROM ubuntu:14.04
MAINTAINER shayashibara <meikyowise@gmail.com>

RUN apt-get update

# Install a basic SSH server
RUN apt-get install -y openssh-server
RUN mkdir -p /var/run/sshd

# Install JDK 7 (latest edition)
RUN apt-get install -y --no-install-recommends default-jdk

# Install utilities
RUN apt-get install -y git wget curl python-virtualenv python-pip build-essential python-dev

# Add user jenkins to the image
RUN adduser --quiet jenkins

# Add user jenkins to sudoers with NOPASSWD
RUN echo "jenkins ALL=(ALL) NOPASSWD:ALL" >> /etc/sudoers

# Set password for the jenkins user (you may want to alter this).
RUN echo "jenkins:jenkins" | chpasswd

# Setting for sshd
RUN sed -i 's|session    required     pam_loginuid.so|session    optional     pam_loginuid.so|g' /etc/pam.d/sshd  

# Standard SSH port
EXPOSE 22

CMD ["/usr/sbin/sshd", "-D"]