based on https://github.com/akullpp/multiple-react-nginx, but with SSL and reverse proxy.
Follow ssl.md instructions first
docker network create local (or whatever you want to call it, just change the network in the docker-compose.yml)
configure gateway/nginx.conf and Dockerfile for your own code and routes (just copy existing server and update for your app, also modify main docker-compose.yml)
Once all configured, docker-compose up --build in main directory.
Add
127.0.0.1 domain.com
127.0.01 subdomain.domain.com
to your hosts file