anchor.diff:      # Install tools, required for building.
       apt-get update && \
       apt-get install -y \
  +        # In general...
           build-essential \
           curl \
  -        libpcre3-dev \
  -        libssl-dev && \
  +
  +        # For Nginx
  +        libssl-dev \
  +        libpcre3-dev && \
   
       # Prepare for building.
       mkdir -p /tmp/build
  
positive.code:         --with-threads
  
  RUN \
      # Start compiling, testing and installing.
      cd /tmp/build/nginx/nginx-${NGINX_VERSION} && \
      make build && \
      make modules && \
      make install
  
negative.code:     tar -xvzf nginx-${NGINX_VERSION}.tar.gz
  
  RUN \
      cd /tmp/build/nginx/nginx-${NGINX_VERSION} && \
      # Run configuration.
      ./configure \
          --with-file-aio \
          --with-http_gunzip_module \
  