How to expose all active ports

Issues information

I have an application that starts sockets in random ports. I’m trying to make a tunneling server powered my localtunnel package. how to expose these random ports to public? pls help me I’m new to Qovery

FROM node:10.1.0-alpine

RUN mkdir -p /usr/src/app
WORKDIR /usr/src/app

COPY . .

RUN yarn install --production && yarn cache clean
ENV NODE_ENV production
EXPOSE 3000
CMD node -r esm ./bin/server --port 3000 --domain tunnel.anirudh-techie.me

Hello,
this thread should answer to your question.