anchor.diff:  
   ENV NEXUS_DATA /nexus-data
   
  -ENV NEXUS_VERSION 3.0.0-b2015110601
  +ENV NEXUS_VERSION 3.0.0-b2016011501
   
   ENV JAVA_HOME /opt/java
   ENV JAVA_VERSION_MAJOR 8
  -ENV JAVA_VERSION_MINOR 60
  -ENV JAVA_VERSION_BUILD 27
  +ENV JAVA_VERSION_MINOR 74
  +ENV JAVA_VERSION_BUILD 02
   
   RUN yum install -y \
     curl tar \
  
positive.code: USER nexus
  WORKDIR /opt/sonatype/nexus
  
  ENV KARAF_BASE /opt/sonatype/nexus
  ENV KARAF_DATA ${NEXUS_DATA}
  ENV KARAF_ETC ${KARAF_BASE}/etc
  ENV KARAF_HOME ${KARAF_BASE}
  
  ENV JAVA_MAX_MEM 768m
  ENV JAVA_MIN_MEM 256m
  ENV EXTRA_JAVA_OPTS ""
  
  CMD bin/nexus start
  
negative.code: # install nexus
  RUN mkdir -p /opt/sonatype/nexus \
    && curl --fail --silent --location --retry 3 \
      https://download.sonatype.com/nexus/3/nexus-${NEXUS_VERSION}-unix.tar.gz \
    | gunzip \
    | tar x -C /opt/sonatype/nexus --strip-components=1 nexus-${NEXUS_VERSION} \
    && chown -R root:root /opt/sonatype/nexus \
    && rm -rf /tmp/nexus-${NEXUS_VERSION} \
    && ls -laR /opt/sonatype/nexus
  
  ## configure nexus runtime env
  RUN sed -e "s|karaf.instances=data/instances|karaf.instances=${NEXUS_DATA}/instances|" -i /opt/sonatype/nexus/bin/nexus.vmoptions
  RUN sed -e "s|karaf.data=data|karaf.data=${NEXUS_DATA}|" -i /opt/sonatype/nexus/bin/nexus.vmoptions
  RUN sed -e "s|java.io.tmpdir=data/tmp|java.io.tmpdir=${NEXUS_DATA}/tmp|" -i /opt/sonatype/nexus/bin/nexus.vmoptions
  
  RUN useradd -r -u 200 -m -c "nexus role account" -d ${NEXUS_DATA} -s /bin/false nexus
  
  