anchor.diff:  # webserver port
   EXPOSE 1080
   
  -CMD ["sh", "-c", "mailcatcher --no-quit --foreground --ip=0.0.0.0 --http-path $HTTPPATH"]+CMD ["sh", "-c", "mailcatcher --no-quit --foreground --ip=0.0.0.0 --http-path $HTTPPATH"]
  
positive.code: FROM ruby:2.4-alpine3.6
  
  LABEL maintainer="Johannes Schickling <schickling.j@gmail.com>"
  
  
negative.code:     && apk add --no-cache --virtual .build-deps \
          build-base \
          sqlite-dev \
      && gem install mailcatcher -v 0.8.2 -N \
      && apk del .build-deps
  
  ENV HTTPPATH="/"
  