Describe how to set environment variables in README

[Laurin-W]

No description provided.

[srosset81]

Isn't the link to the tutorial https://docs.activitypods.org/tutorials/create-your-first-social-app/ at the very top of the README enough ?

I would prefer to avoid having the same instructions in double.

[Laurin-W]

Good point. I was trying to set up the boilerplate without docker-compose the other day and I ran in to quite a lot of issues of how the .env files depend on each other. But expanding on this in the docs and a few lines in the .env files themselves should be fine.
Also I ran into issues of version compatibility with docker-compose. My debian server did not support the latest which caused some trouble there too.

[srosset81]

Also I ran into issues of version compatibility with docker-compose. My debian server did not support the latest which caused some trouble there too.

Maybe we should specify the expected Docker compose version ? It's true that, in the latest versions, there is no more version properties in the YAML files.