Dockerfile

FROM ubuntu:16.04

# Install Java.
RUN \
    echo "===> add webupd8 repository..."  && \
    echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list  && \
    echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list  && \
    apt-key adv --keyserver keyserver.ubuntu.com --recv-keys EEA14886  && \
    apt-get update  && \
    \
    \
    echo "===> install Java"  && \
    echo debconf shared/accepted-oracle-license-v1-1 select true | debconf-set-selections  && \
    echo debconf shared/accepted-oracle-license-v1-1 seen true | debconf-set-selections  && \
    DEBIAN_FRONTEND=noninteractive  apt-get install -y --force-yes oracle-java8-installer oracle-java8-set-default  && \
    \
    \
    echo "===> clean up..."  && \
    rm -rf /var/cache/oracle-jdk8-installer  
ENV JAVA_HOME /usr/lib/jvm/java-8-oracle

# install mvn
RUN apt-get install -y maven git

# cleanup apt
RUN apt-get autoremove && \
    apt-get clean && \
    rm -rf /var/lib/apt/lists/*

RUN git config --global user.email "pipeline@bitbucket.org"
RUN git config --global user.name "Pipeline"

# download common mvn dependencies
ADD pom.xml /opt
RUN mvn -f /opt/pom.xml scm:validate

ENTRYPOINT ["mvn"]
CMD ["mvn"]