anchor.diff:  ./autogen.sh && \
   make && \
   make install && \
  +# install purple matrix
  +cd && \
  +cd purple-matrix && \
  +make && \
  +make install && \
   # libtool --finish
   libtool --finish /usr/local/lib/bitlbee && \
   # cleanup
  -apt-get autoremove -y --purge autoconf automake gcc libtool make dpkg-dev mercurial git && \
  +apt-get autoremove -y --purge autoconf automake build-essential gcc libtool make dpkg-dev mercurial git libsqlite3-dev && \
   apt-get clean && \
   rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* /tmp/* && \
   cd && \
  
positive.code: ENV VERSION=3.6
  
  RUN apt-get update && \
  apt-get install -y --no-install-recommends autoconf automake gettext gcc git libtool make dpkg-dev \
  libglib2.0-dev libotr5-dev libpurple-dev libgnutls28-dev \
  libjson-glib-dev libprotobuf-c-dev protobuf-c-compiler \
  mercurial libgcrypt20 libgcrypt20-dev \
  libmarkdown2-dev libwebp-dev libtool-bin && \
  cd && \
  curl -LO# https://get.bitlbee.org/src/bitlbee-$VERSION.tar.gz && \
  curl -LO# https://github.com/EionRobb/skype4pidgin/archive/1.5.tar.gz && \
  
negative.code: curl -LO# https://github.com/sm00th/bitlbee-discord/archive/0.4.2.tar.gz && \
  git clone https://github.com/dylex/slack-libpurple.git && \
  git clone https://github.com/jgeboski/bitlbee-steam.git && \
  git clone https://github.com/matrix-org/purple-matrix.git && \
  # build bitlbee
  tar zxvf bitlbee-$VERSION.tar.gz && \
  cd bitlbee-$VERSION && \
  