anchor.diff: -FROM debian:wheezy
  +FROM debian:jessie
   MAINTAINER Steve Nolen <technolengy@gmail.com>
   # Report issues here: https://github.com/ohmage/docker
    
  
positive.code:     && tar -xvf flyway.tar.gz --strip-components=1 \
      && rm flyway.tar.gz
   
  #### download ohmage migrations ####
  ENV OHMAGE_PKGS_URL https://web.ohmage.org/ohmage/packages/latest
   
  WORKDIR $OHMAGE_DATA/flyway/sql
  RUN cp /app.war "$CATALINA_HOME"/webapps/app.war
  RUN curl -fSL "$OHMAGE_PKGS_URL"/server/migrations.tar.gz -o migrations.tar.gz \
      && tar -xvf migrations.tar.gz \
      && rm migrations.tar.gz
   
  ADD run.sh /run.sh
  ADD ohmage.conf /etc/ohmage.conf
  
  RUN chmod +x /run.sh
   
  #### setup run user ####
  RUN useradd -ms /bin/bash ohmage && \
      chown -R ohmage "$CATALINA_HOME" && \
  
negative.code:   F7DA48BB64BCB84ECBA7EE6935CD23C10D498E23
   
  ENV TOMCAT_MAJOR 7
  ENV TOMCAT_VERSION 7.0.65
  ENV TOMCAT_TGZ_URL https://www.apache.org/dist/tomcat/tomcat-$TOMCAT_MAJOR/v$TOMCAT_VERSION/bin/apache-tomcat-$TOMCAT_VERSION.tar.gz
   
  RUN set -x \
  