FROM alpine:3.9

# slideshow 4.1.0 is latest now
RUN apk add --update --no-cache ruby ruby-json ruby-bigdecimal ruby-etc \
         mercurial &&\
         gem install -N slideshow -v 4.1.0 && \ 
         mkdir -p ~/.slideshow/templates &&\
         hg clone http://www.cr.ie.u-ryukyu.ac.jp/hg/Members/anatofuz/slideshow-s6cr/ ~/.slideshow/templates &&\
         apk del mercurial

WORKDIR /slideshow

# [comb cmd with entorypoint](https://qiita.com/hihihiroro/items/d7ceaadc9340a4dbeb8f)

ENTRYPOINT ["slideshow", "build", "-t", "s6cr"]
CMD ["README.md"]