FROM jekyll/jekyll:4.2.0 as jekyll COPY run.sh /usr/local/bin/ RUN chmod a+x /usr/local/bin/run.sh ENTRYPOINT [ "run.sh" ] EXPOSE 4000 CMD [ "bundle", "exec", "jekyll", "serve", "--force_polling", "-H", "0.0.0.0", "-P", "4000" ]