anchor.diff:      && make -C /usr/src/redis install \
       && rm -r /usr/src/redis
   
  -ENV DOCKER_VERSION 1.10.3
  -ENV DOCKER_SHA256 d0df512afa109006a450f41873634951e19ddabf8c7bd419caeb5a526032d86d
  +ENV DOCKER_BUCKET get.docker.com
  +ENV DOCKER_VERSION 1.11.2
  +ENV DOCKER_SHA256 8c2e0c35e3cda11706f54b2d46c2521a6e9026a7b13c7d4b8ae1f3a706fc55e1
   
  -RUN curl -fSL "https://get.docker.com/builds/Linux/x86_64/docker-$DOCKER_VERSION" -o /usr/local/bin/docker \
  -    && echo "${DOCKER_SHA256}  /usr/local/bin/docker" | sha256sum -c - \
  -    && chmod +x /usr/local/bin/docker
  +RUN set -x \
  +        && curl -fSL "https://${DOCKER_BUCKET}/builds/Linux/x86_64/docker-$DOCKER_VERSION.tgz" -o docker.tgz \
  +        && echo "${DOCKER_SHA256} *docker.tgz" | sha256sum -c - \
  +        && tar -zxvf docker.tgz \
  +        && mv docker/* /usr/local/bin/ \
  +        && rmdir docker \
  +        && rm docker.tgz \
  +        && docker -v
   
   ENV DOCKER_HOST tcp://docker:2375
   
  
positive.code:     && npm install -g "npm@${NPM_VERSION}" \
      && npm cache clear
  
  ENV REDIS_VERSION 3.0.7
  ENV REDIS_DOWNLOAD_URL http://download.redis.io/releases/redis-3.0.7.tar.gz
  ENV REDIS_DOWNLOAD_SHA1 e56b4b7e033ae8dbf311f9191cf6fdf3ae974d1c
  
  RUN set -x \
      && mkdir -p /usr/src/redis \
  
negative.code:     gpg --keyserver ha.pool.sks-keyservers.net --recv-keys "$key"; \
    done
  
  ENV NODE_VERSION 0.12.15
  ENV NPM_VERSION 2.15.9
  
  RUN curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/node-v$NODE_VERSION-linux-x64.tar.gz" \
      && curl -SLO "https://nodejs.org/dist/v$NODE_VERSION/SHASUMS256.txt.asc" \
  