https://roadmap.sh/projects/multiservice-docker
You need to create a .env file at the root of the directory, with the same content as the env.example (you can change the values)
I'm using docker secrets for some vars that I don't want in my environment, I push them in the secrets/ so you can use it too.
to run all the services:
docker compose upthe web client is avaible at http://localhost/ by default
only the client is accessible threw a reverse proxy
ps: the code and UI/UX are bad, I just needed some small app for the services. you can check the other projects on my github to see better frontend or backend for more advanced projects.