anchor.diff:  # RUN sudo apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 0C49F3730359A14518585931BC711F9BA15703C6
   
   ENV MONGO_MAJOR 3.4
  -ENV MONGO_VERSION 3.4.1
  +ENV MONGO_VERSION 3.4.3
   ENV MONGO_PACKAGE mongodb-org
   
   # https://docs.mongodb.com/manual/tutorial/install-mongodb-on-ubuntu/
  
positive.code:   && rm -rf /var/lib/apt/lists/* \
  # && rm -rf /var/lib/mongodb
  #	&& mv /etc/mongod.conf /etc/mongod.conf.orig
  
  # RedHat Warning: Transparent hugepages looks to be active and should not be.
  # Please look at http://bit.ly/1ZAcLjD as for how to PERMANENTLY alter this setting.
  # RUN echo never > /sys/kernel/mm/transparent_hugepage/enabled
  # Ubuntu disabling transparent hugepages
  RUN echo kernel/mm/transparent_hugepage/enabled = never > /etc/sysfs.conf
  # Warning: Swappiness is not set to 0.
  # Please look at http://bit.ly/1k2CtNn as for how to PERMANENTLY alter this setting.
  # RUN sysctl vm.swappiness=0 && echo "vm.swappiness = 0" >> /etc/sysctl.conf
  # Ubuntu set swappiness 0
  RUN echo 'vm.swappiness = 0' >> /etc/sysctl.conf
  
  
    && mkdir -p /data/db /data/configdb \
  	&& chown -R mongodb:mongodb /data/db /data/configdb
  VOLUME /data/db /data/configdb
  
negative.code:       keyax.os="ubuntu core" \
        keyax.os.ver="16.10 yaketty" \
        keyax.vendor="Keyax" \
        keyax.app="Mongodb 3.4.3" \
        keyax.app.ver="2.1"
  
        # RedHat Warning: Transparent hugepages looks to be active and should not be.
        # Please look at http://bit.ly/1ZAcLjD as for how to PERMANENTLY alter this setting.
        # RUN echo never > /sys/kernel/mm/transparent_hugepage/enabled
        # Ubuntu disabling transparent hugepages
        RUN echo kernel/mm/transparent_hugepage/enabled = never > /etc/sysfs.conf
        # Warning: Swappiness is not set to 0.
        # Please look at http://bit.ly/1k2CtNn as for how to PERMANENTLY alter this setting.
        # RUN sysctl vm.swappiness=0 && echo "vm.swappiness = 0" >> /etc/sysctl.conf
        # Ubuntu set swappiness 0
        RUN echo 'vm.swappiness = 0' >> /etc/sysctl.conf
  
  # add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
  RUN groupadd -r mongodb && useradd -r -g mongodb mongodb
  