Dockerfile.jdk8_mvn_git

FROM alpine

## revise for non-alpine OS
##     shell is alpine-specific
##     .profile is ash shell-specific
##     adduser is alpine-specific
##
ENV ALPMIN_USERNAME=jdev
ENV ALPMIN_UID=1000
ENV ALPMIN_GID=1000
ENV ALPMIN_GNAME=jdev
ENV ALPMIN_SHELL=/bin/ash
ENV ALPMIN_SHELL_PROFILE=.profile
ENV ALPMIN_ROOT=/jdev
ENV JAVA_HOME=/opt/zulu8.44.0.11-ca-jdk8.0.242-linux_musl_x64
ENV TZ_PATH=Australia/Sydney
ENV TZ_NAME=Australia/Sydney
ENV ENV=/etc/profile

# install packages from alpine repository
RUN apk update && \
    apk upgrade && \
    apk add \
      net-tools \
      iputils \
      nano \
      wget \
      tzdata \
      openssh-client \
      git \
      maven  && \
#
# set timezone
    cp -v /usr/share/zoneinfo/${TZ_PATH} /etc/localtime && \
    echo "${TZ_NAME}" >  /etc/timezone && \
#
# add non-privileged user
    addgroup --gid ${ALPMIN_GID} ${ALPMIN_GNAME} && \
    adduser -u ${ALPMIN_UID} -G ${ALPMIN_GNAME} -s ${ALPMIN_SHELL} -h /home/${ALPMIN_USERNAME} -D ${ALPMIN_USERNAME} && \
    echo ${ALPMIN_USERNAME} > pw && \
    echo ${ALPMIN_USERNAME} >> pw && \
    cat pw | passwd ${ALPMIN_USERNAME} && \
    rm -v pw && \
    mkdir -pv ${ALPMIN_ROOT} && \
    chown -Rv ${ALPMIN_UID}:${ALPMIN_GID} ${ALPMIN_ROOT} && \
#
# update user profile
    echo "MAVEN_OPTS=-Xmx3g" > /home/${ALPMIN_USERNAME}/.mavenrc && \
    echo "export JAVA_HOME=${JAVA_HOME}" >> /home/${ALPMIN_USERNAME}/${ALPMIN_SHELL_PROFILE} && \
    echo "export MAVEN_OPTS=-Xmx3g" >> /home/${ALPMIN_USERNAME}/${ALPMIN_SHELL_PROFILE} && \
    echo "export PATH=${JAVA_HOME}/bin:${PATH}" >> /home/${ALPMIN_USERNAME}/${ALPMIN_SHELL_PROFILE} && \
    chmod u+x /home/${ALPMIN_USERNAME}/${ALPMIN_SHELL_PROFILE} && \
    chown -Rv ${ALPMIN_UID}:${ALPMIN_GID} /home/${ALPMIN_ROOT} && \
#
# get and install OpenJDK8
    mkdir -pv ~/Downloads && \
    cd /root/Downloads && \
    wget -q https://cdn.azul.com/zulu/bin/zulu8.44.0.11-ca-jdk8.0.242-linux_musl_x64.tar.gz -O zulu8.44.0.11-ca-jdk8.0.242-linux_musl_x64.tar.gz && \
    cd /opt && \
    tar xf /root/Downloads/zulu8.44.0.11-ca-jdk8.0.242-linux_musl_x64.tar.gz && \
    ${JAVA_HOME}/bin/java -version && \
    ${JAVA_HOME}/bin/javac -version && \
    rm -v /root/Downloads/zulu8.44.0.11-ca-jdk8.0.242-linux_musl_x64.tar.gz && \
#
# make sure that JAVA_HOME is pre-pended to the default path
    echo 'export PATH=${JAVA_HOME}/bin:${PATH}' >> ${ENV} && \
#
# create entrypoint script
    echo "#!/bin/ash" > /usr/local/bin/docker-entrypoint.sh && \
    echo "set -e"  >> /usr/local/bin/docker-entrypoint.sh && \
    echo "exec /bin/ash -c 'while true; do sleep 10000; done'"  >> /usr/local/bin/docker-entrypoint.sh && \
    chmod +x /usr/local/bin/docker-entrypoint.sh

ENTRYPOINT ["ash","-c","while true; do sleep 10000; done"]