anchor.diff:    && curl https://bazel.build/bazel-release.pub.gpg | apt-key add -
   
   RUN apt-get update \
  -  && apt-get install -y bazel
  +  && apt-get install -y bazel && \
  +  rm -rf /var/lib/apt/lists/*
   
   ENV CONTAINER_STRUCTURE_TEST_VERSION=1.5.0
   RUN curl -LO https://storage.googleapis.com/container-structure-test/v${CONTAINER_STRUCTURE_TEST_VERSION}/container-structure-test-linux-amd64 \
  
positive.code:            xenial \
             edge" && \
      apt-get -y update && \
      apt-get -y install docker-ce=17.12.0~ce-0~ubuntu
  
  COPY --from=golang:1.10 /usr/local/go /usr/local/go
  ENV PATH /usr/local/go/bin:/go/bin:$PATH
  
negative.code:         software-properties-common \
          ruby-dev \
          apt-transport-https && \
      rm -rf /var/lib/apt/lists/* && \
      gem install  --no-document "asciidoctor-pdf:${ASCIIDOCTOR_PDF_VERSION}" \
          asciidoctor:${ASCIIDOCTOR_VERSION} \
          pygments.rb rouge && \
  