anchor.diff:  
   # Copy the source into /opt/provsql
   COPY . /opt/provsql
  +WORKDIR /opt/provsql
   
   # needed to build provsql the tools + libc6-i386 for running c2d
   RUN apt-get update &&\
  
positive.code: 
  EXPOSE 5432
  
  RUN cd /opt/provsql; make install
  
  USER postgres
  #create a db test
  
negative.code: ##############################   GETTING  PROVSQL  ##############################   
  
  # Provsql will be built & run as user postgres
  RUN chown -R postgres:postgres /opt/provsql
  USER postgres
  
  # Building
  