FROM ruby:3.3-alpine

ARG APK_PROXY
RUN if [ -n "$APK_PROXY" ]; then \
  cp /etc/apk/repositories /etc/apk/repositories.bak && \
  sed -i "s|dl-cdn.alpinelinux.org|$APK_PROXY|g" /etc/apk/repositories ; \
  fi

RUN apk update && apk add --no-cache \
  git

COPY . /src/gh/pages-gem

ARG GEM_PROXY
RUN if [ -n "$GEM_PROXY" ]; then \
  bundle config mirror.https://rubygems.org "https://$GEM_PROXY";\
  fi

# one step to exclude .build_deps from docker cache
RUN apk add --no-cache --virtual .build_deps \
  make \
  build-base && \
  bundle config local.github-pages /src/gh/pages-gem && \
  bundle install --gemfile=/src/gh/pages-gem/Gemfile && \
  apk del .build_deps

RUN ln -f -s /src/gh/pages-gem/bin/github-pages /usr/local/bundle/bin/github-pages

ENV LANG en_US.UTF-8
ENV LANGUAGE en_US.UTF-8
ENV LC_ALL en_US.UTF-8

WORKDIR /src/site

ENTRYPOINT ["github-pages"]
CMD ["serve", "-H", "0.0.0.0", "-P", "4000", "-I", "--watch", "--verbose"]