anchor.diff:  COPY postgresql.conf /etc/postgresql.conf
   
   RUN chown postgres:postgres /etc/postgresql.conf \
  - && echo "@edge-main http://dl-cdn.alpinelinux.org/alpine/edge/main" >> /etc/apk/repositories \
    && echo "@edge-testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories \
    && apk --no-cache add \
       build-base \
       geos@edge-testing \
       gdal@edge-testing \
  -    json-c@edge-main \
  +    json-c \
       libxml2 \
       perl-dev \
       proj@edge-testing \
  +    protobuf-c \
    && cpan TAP::Parser::SourceHandler::pgTAP \
    && apk del --no-cache -r build-base \
    && rm -rf \
  
positive.code:  && make \
   && make install \
   && cd .. \
   && git clone https://github.com/gavinwahl/postgres-json-schema \
   && cd postgres-json-schema \
   && make install
  
  
negative.code: ENV PGTAP_VERSION v1.0.0
  ENV POSTGIS_VERSION 2.5.2
  
  RUN echo "@edge-testing http://dl-cdn.alpinelinux.org/alpine/edge/testing" >> /etc/apk/repositories \
   && apk --no-cache add \
      build-base \
      geos-dev@edge-testing \
      gdal-dev@edge-testing \
      git \
      json-c-dev \
      libxml2-dev \
      perl \
      proj-dev@edge-testing \
      protobuf-c-dev \
   && wget -q https://download.osgeo.org/postgis/source/postgis-${POSTGIS_VERSION}.tar.gz \
   && tar zxf postgis-${POSTGIS_VERSION}.tar.gz \
   && cd postgis-${POSTGIS_VERSION} \
  