Load config from a config.json file

[guanzo]

Config is currently set with environment variables. Env vars are set in the docker compose file. The docker compose file is basically locked since we don't want to force node operators to update it.

Solution: Check for a /usr/src/app/shared/config.json file, which is mapped to $SATURN_HOME/shared/config.json on the host filesystem.

L1-node/docker-compose.yml

Line 25 in 9e30610

- ${SATURN_HOME:-$HOME}/shared:/usr/src/app/shared

This will allow us to configure behavior without changing the docker compose file. Config files are also more flexible than env vars.

Let's implement this when the current config system becomes a pain point. There are more pressing issues atm (Rhea/Lassie).

[joaosa]

Do we still need this? Or is the .env load on docker compose good enough for now? I think it would be good to scope deployment-specific configs from application-specific ones.

[DiegoRBaquero]

As soon as there's a new config value that is worthy of a file, let's do it. But for now env works