FROM reg.zknt.org/zknt/node:18

ENV VERSION 1.0.0

RUN set -xe;\
  curl -LO https://github.com/NickColley/semaphore/archive/refs/tags/${VERSION}.tar.gz &&\
  mkdir /app &&\
  tar --strip-components=1 -C /app -xvzf ${VERSION}.tar.gz &&\
  cd /app &&\
  yarn --production --pure-lockfile &&\
  yarn build

EXPOSE 8080
WORKDIR /app
ENTRYPOINT PORT=8080 node server.js