FROM node:16-alpine

WORKDIR /app

COPY package.json /app/package.json
RUN npm install --omit=dev

COPY server.js /app/server.js
COPY entrypoint.sh /app/entrypoint.sh
RUN chmod +x /app/entrypoint.sh

EXPOSE 53/udp
EXPOSE 53/tcp

CMD ["/app/entrypoint.sh"]