anchor.diff:  ### install gosu for easy step-down from root
   ### https://github.com/tianon/gosu/releases
   
  -ARG DEBIAN_FRONTEND=noninteractive
  -RUN set -ex \
  - && apt-get update -qq \
  - && apt-get install -qqy --no-install-recommends ca-certificates curl \
  - && rm -rf /var/lib/apt/lists/* \
  - && curl -L -o /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture)" \
  - && curl -L -o /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$(dpkg --print-architecture).asc" \
  - && export GNUPGHOME="$(mktemp -d)" \
  - && gpg --keyserver hkp://ha.pool.sks-keyservers.net:80 --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
  - && gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
  - && rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc \
  - && chmod +x /usr/local/bin/gosu \
  - && gosu nobody true \
  - && apt-get clean
  +RUN set -x \
  +    && apk add --no-cache --virtual .gosu-deps \
  +        dpkg \
  +        gnupg \
  +        openssl \
  +    && dpkgArch="$(dpkg --print-architecture | awk -F- '{ print $NF }')" \
  +    && wget -O /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch" \
  +    && wget -O /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/$GOSU_VERSION/gosu-$dpkgArch.asc" \
  +    && export GNUPGHOME="$(mktemp -d)" \
  +    && gpg --keyserver ha.pool.sks-keyservers.net --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
  +    && gpg --batch --verify /usr/local/bin/gosu.asc /usr/local/bin/gosu \
  +    && rm -r "$GNUPGHOME" /usr/local/bin/gosu.asc \
  +    && chmod +x /usr/local/bin/gosu \
  +    && gosu nobody true \
  +    && apk del .gosu-deps
   
   
   ####################################################
  
positive.code: # and will receive no further updates after 2016-12-31 (Dec 31, 2016)
  
  # Change to OpenJDK
  FROM openjdk:8-jre
  # OS is Debian 64bit
  
  MAINTAINER Tuan Vo <vohungtuan@gmail.com>
  # Reference Sebastien Pujadas http://pujadas.net
  
negative.code: ####################################################
  # OpenJDK - Java 8
  
  # They are defined in the base image openjdk:8-jre-alpine
  # ENV JAVA_VERSION 8u92
  # ENV JAVA_ALPINE_VERSION 8.92.14-r1
  # ENV JAVA_HOME /usr/lib/jvm/java-1.8-openjdk/jre
  # ENV PATH $PATH:/usr/lib/jvm/java-1.8-openjdk/jre/bin:/usr/lib/jvm/java-1.8-openjdk/bin
  
  ###############################################################################
  #                                INSTALLATION
  