anchor.diff:          grep \
           iproute2 \
           less \
  -        libffi \
  +        libc-dev \
  +        libffi-dev \
  +        libtool \
  +        linux-headers \
           make \
           moreutils \
           ncurses \
           nodejs \
           openssh \
  -        openssl \
  +        openssl-dev \
           perl \
           python3-dev \
           sudo \
           tree \
           tzdata \
           unzip \
  +        util-linux \
           vim \
           zip \
           zsh \
  
positive.code: RUN cd /tmp \
   && wget https://github.com/nghttp2/nghttp2/releases/download/v${NGHTTP2_VERSION}/nghttp2-${NGHTTP2_VERSION}.tar.bz2 \
   && wget https://dl.uxnr.de/mirror/curl/curl-${CURL_VERSION}.tar.bz2 \
   && apk add --no-cache \
          autoconf \
          automake \
          build-base \
          file \
          libtool \
          openssl-dev \
          util-linux \
   && tar -xvjf nghttp2-${NGHTTP2_VERSION}.tar.bz2 \
   && cd /tmp/nghttp2-${NGHTTP2_VERSION} \
   && autoreconf -i \
  
negative.code: RUN install-docker 18.06.3-ce
  
  COPY compose.patch /tmp/compose.patch
  RUN cd /tmp \
   && git clone https://github.com/pypa/pip.git -b 19.1.1 \
   && cd pip \
   && python setup.py install \
  