anchor.diff:  
   RUN sed " \
   		s!#'/': '/path/to/xo-web/dist/'!'/': '../web/dist/'!; \
  -		s!#uri: ''!uri: 'tcp://redis:6379'!; \
  -	" sample.config.yaml >.xo-server.yaml
  +		s!#uri: ''!uri: 'redis://redis:6379'!; \
  +	" sample.config.yaml > .xo-server.yaml
   
   EXPOSE 80
   CMD ["npm", "start"]
  
positive.code: FROM node:0.12
  
  # see https://github.com/vatesfr/xo/blob/a269af702992616f67b7bcf066eac0a1124ac8bf/doc/installation/manual_installation.md
  
  
negative.code: 
  WORKDIR /usr/src/xo/server
  
  ENV XO_SERVER_REF v4.16.1
  ENV XO_WEB_REF v4.16.0
  
  RUN git clone -b "$XO_SERVER_REF" --depth 1 https://github.com/vatesfr/xo-server.git .
  RUN git clone -b "$XO_WEB_REF" --depth 1 https://github.com/vatesfr/xo-web.git ../web
  
  RUN set -x \
  	&& npm install \
  