anchor.diff:  
   MAINTAINER Timescale https://www.timescale.com
   
  +# Update list below to include previous versions when changing this
   ENV TIMESCALEDB_VERSION 1.0.0
   
   COPY docker-entrypoint-initdb.d/000_install_timescaledb.sh /docker-entrypoint-initdb.d/
  
positive.code: RUN set -ex \
      && apk add --no-cache --virtual .fetch-deps \
                  ca-certificates \
                  openssl \
                  openssl-dev \
                  tar \
      && mkdir -p /build/timescaledb \
      && wget -O /timescaledb.tar.gz https://github.com/timescale/timescaledb/archive/$TIMESCALEDB_VERSION.tar.gz \
      && tar -C /build/timescaledb --strip-components 1 -zxf /timescaledb.tar.gz \
      && rm -f /timescaledb.tar.gz \
      \
      && apk add --no-cache --virtual .build-deps \
                  coreutils \
  
negative.code:                 cmake \
                  util-linux-dev \
      \
      # Build old versions to keep .so and .sql files around \
      && OLD_VERSIONS="0.9.0 0.9.1 0.9.2 \
      0.10.0 0.10.1 0.11.0 0.12.0 0.12.1 \
      1.0.0-rc1 1.0.0-rc2 1.0.0-rc3" \
      && for VERSION in ${OLD_VERSIONS}; do cd /build/timescaledb && rm -fr build && git checkout ${VERSION} && ./bootstrap -DPROJECT_INSTALL_METHOD="docker" && cd build && make install; done \
      \
      # Remove unnecessary update files & mock files \
      && rm -f `pg_config --sharedir`/extension/timescaledb--*--*.sql \
      && rm -f `pg_config --sharedir`/extension/timescaledb*mock*.sql \
      \
      # Build current version \
      && cd /build/timescaledb && rm -fr build \
      && git checkout ${TIMESCALEDB_VERSION} \
      && ./bootstrap -DPROJECT_INSTALL_METHOD="docker" \
      && cd build && make install \
      && cd ~ \
  