anchor.diff:  RUN echo "deb http://packages.cloud.google.com/apt cloud-sdk-jessie main" | tee -a /etc/apt/sources.list.d/google-cloud-sdk.list \
     && curl https://packages.cloud.google.com/apt/doc/apt-key.gpg | apt-key add -
   
  -RUN apt-key adv --keyserver keys.gnupg.net --recv-keys 09617FD37CC06B54 \
  -    && echo "deb http://dist.crystal-lang.org/apt crystal main" > /etc/apt/sources.list.d/crystal.list
  +RUN curl -sL "https://keybase.io/crystal/pgp_keys.asc" | apt-key add - \
  +    && echo "deb https://dist.crystal-lang.org/apt crystal main" | tee /etc/apt/sources.list.d/crystal.list
   
   RUN apt-get update \
     && apt-get -y install \
  
positive.code:   google-cloud-sdk \
    iptables \
    jq \
    libmysqlclient-dev \
    libpq-dev \
    libsqlite3-dev \
    libgconf-2-4 \
    lsb-release \
    module-init-tools \
    npm \
    php5 \
    python-dev \
    python-pip \
    shellcheck \
  
negative.code:   && gem install bundler -v 1.15.4
  COPY Gemfile /usr/local/Gemfile
  COPY Gemfile.lock /usr/local/Gemfile.lock
  RUN cd /usr/local && bundle install && bundle binstub bundler --force
  
  #install fly-cli
  RUN curl "https://buildpacks.ci.cf-app.com/api/v1/cli?arch=amd64&platform=linux" -sfL -o /usr/local/bin/fly \
  