anchor.diff:  
   # set runtime (from ybalt/ansible-tower)
   ADD docker-entrypoint.sh /docker-entrypoint.sh
  -RUN chmod +x /docker-entrypoint.sh && \
  -    chown postgres:postgres /var/lib/postgresql/9.4/main
  +RUN chmod +x /docker-entrypoint.sh
   ENTRYPOINT ["/docker-entrypoint.sh"]
   CMD ["ansible-tower"]
  
positive.code: 
  # global environment settings
  ENV ANSIBLE_TOWER_VER=latest \
  ADMIN_PASSWORD=changme \
  SERVER_NAME=localhost
  
  ADD ./inventory /opt/inventory
  ADD ./tower_setup_conf.yml /opt/tower_setup_conf.yml
  
  RUN \
   apt-get -y update && \
  
negative.code:  rm -rf ansible-tower-setup-${ANSIBLE_TOWER_VER}.tar.gz && \
   mv ansible-tower-setup-* /opt/tower-setup && \
   mv /opt/inventory /opt/tower-setup/inventory && \ 
  
  # add passwords and fix locale issue
   sed -i "s/changeme/${ADMIN_PASSWORD}/g" /opt/tower-setup/inventory && \
  