anchor.diff:  
   FROM ubuntu:xenial as nodejs_tools_context
   
  +# Pinned versions of stuff we pull in
  +ENV BABEL_CLI_VERSION=v7.5.5
  +ENV BABEL_CORE_VERSION=v7.5.5
  +ENV BABEL_POLYFILL_VERSION=v7.4.4
  +ENV BABEL_PRESET_ENV=v7.5.5
  +ENV BABEL_PRESET_MINIFY_VERSION=v0.5.1
  +ENV MARKDOWN_SPELLCHECK_VERSION=v1.3.1
   ENV NODEJS_VERSION=12.8.0
  -ENV MARKDOWN_SPELLCHECK_VERSION=v1.3.1
   ENV SASS_LINT_VERSION=v1.13.1
  -ENV TYPESCRIPT_VERSION=v3.5.3
  -ENV TSLINT_VERSION=v5.18.0
   ENV SASS_VERSION=v1.22.10
   ENV SVGO_VERSION=v1.3.0
   ENV SVGSTORE_CLI_VERSION=v1.3.1
  -ENV BABEL_CLI_VERSION=v7.5.5
  -ENV BABEL_CORE_VERSION=v7.5.5
  -ENV BABEL_PRESET_ENV=v7.5.5
  -ENV BABEL_PRESET_MINIFY_VERSION=v0.5.1
  -ENV BABEL_POLYFILL_VERSION=v7.4.4
  +ENV TSLINT_VERSION=v5.18.0
  +ENV TYPESCRIPT_VERSION=v3.5.3
   
   ADD https://nodejs.org/download/release/v${NODEJS_VERSION}/node-v${NODEJS_VERSION}-linux-x64.tar.gz /tmp
   RUN tar -xzf /tmp/node-v${NODEJS_VERSION}-linux-x64.tar.gz --strip-components=1 -C /usr/local
  
positive.code: # Ruby suppport
  ENV RUBYOPT="-KU -E utf-8:utf-8"
  
  COPY --from=base_os_context / /
  COPY --from=binary_tools_context /out/ /
  COPY --from=binary_tools_context /usr/local/go/ /go/
  
negative.code: 
  FROM ubuntu:xenial as python_context
  
  # Pinned versions of stuff we pull in
  ENV YAMLLINT_VERSION=1.17.0
  
  RUN apt-get update && apt-get install -y --no-install-recommends \
  