anchor.diff:  # Download Apache Tomcat and extract it
   RUN wget -q "${APACHE_TOMCAT_URL}" \
   	&& unzip ${APACHE_TOMCAT_PACKAGE}.zip \
  -	&& rm ${APACHE_TOMCAT_PACKAGE}.zip
  +	&& rm ${APACHE_TOMCAT_PACKAGE}.zip \
  +	&& ln -s ${APACHE_TOMCAT_PACKAGE} apache-tomcat
   
   # Download Knowage engines and extract them
   RUN wget -q -O temp.zip "${KNOWAGE_CORE_URL}" \
  
positive.code: 	&& wget -q -O "${TOMCAT_LIB}/${LIB_MYFOO_COMMONJ_NAME}"        "${LIB_MYFOO_COMMONJ_URL}"       \
  	&& wget -q -O "${TOMCAT_LIB}/${LIB_POSTGRESQL_CONNECTOR_NAME}" "${LIB_POSTGRESQL_CONNECTOR_URL}"
  
  RUN ls -l ${TOMCAT_HOME}
  
  # Override Apache Tomcat server configuration and add security policy
  COPY server.xml knowage-default.policy ${TOMCAT_CONF}/
  
  
negative.code: 
  WORKDIR ${KNOWAGE_DIRECTORY}
  
  # Copy common files
  COPY CHANGELOG.md CONTRIBUTING.md LICENSE README.md entrypoint.sh wait-for-it.sh ./
  
  # Install required packages and clean up to save space
  RUN apt-get update \
  	&& apt-get upgrade -y \
  