anchor.diff:  
   ENV GOLANG_VERSION 1.4
   
  -RUN curl -sSL https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz | tar -v -C /usr/src -xz \
  +RUN curl -sSL https://golang.org/dl/go$GOLANG_VERSION.src.tar.gz \
  +  | tar -v -C /usr/src -xz \
    && cd /usr/src/go/src \
    && ./make.bash --no-clean 2>&1
   
  
positive.code: ENV NPM_VERSION 2.1.16
  
  RUN curl -SLO "http://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.gz" \
    && curl -SLO "http://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
    && gpg --verify SHASUMS256.txt.asc \
    && grep " node-v$NODE_VERSION-linux-x64.tar.gz\$" SHASUMS256.txt.asc | sha256sum -c - \
    && tar -xzf "node-v$NODE_VERSION-linux-x64.tar.gz" -C /usr/local --strip-components=1 \
    && rm "node-v$NODE_VERSION-linux-x64.tar.gz" SHASUMS256.txt.asc \
    && npm install -g npm@"$NPM_VERSION" \
    && npm cache clear
  
  ### Ruby
  RUN apt-get update && apt-get install -y \
      curl \
      procps \
    && rm -rf /var/lib/apt/lists/*
  
  ENV RUBY_MAJOR 2.2
  ENV RUBY_VERSION 2.2.0
  
negative.code: ### CPPCheck
  ENV CPPCHECK_VERSION 1.61-1
  
  RUN apt-get update \
   && apt-get install -y \
      cppcheck=$CPPCHECK_VERSION \
   && rm -rf /var/lib/apt/lists/*
  
  ### GoLint
  RUN go get github.com/golang/lint/golint
  