chore: move to .env.example (#3592)

* chore: move to .env.example

* docs: meniton copying .env.example

* chore: app-lib env example

Co-authored-by: Alejandro González <7822554+AlexTMjugador@users.noreply.github.com>

Signed-off-by: Erb3 <49862976+Erb3@users.noreply.github.com>

---------

Signed-off-by: Erb3 <49862976+Erb3@users.noreply.github.com>

apps/docs/src/content/docs/contributing/labrinth.md

@@ -7,7 +7,7 @@ This project is part of our [monorepo](https://github.com/modrinth/code). You ca
 
 [labrinth] is the Rust-based backend serving Modrinth's API with the help of the [Actix](https://actix.rs) framework. To get started with a labrinth instance, install docker, docker-compose (which comes with Docker), and [Rust]. The initial startup can be done simply with the command `docker-compose up`, or with `docker compose up` (Compose V2 and later). That will deploy a PostgreSQL database on port 5432 and a MeiliSearch instance on port 7700. To run the API itself, you'll need to use the `cargo run` command, this will deploy the API on port 8000.
 
-Now, you'll have to install the sqlx CLI, which can be done with cargo:
+To get a basic configuration, copy the `.env.example` file to `.env`. Now, you'll have to install the sqlx CLI, which can be done with cargo:
 
 ```bash
 cargo install --git https://github.com/launchbadge/sqlx sqlx-cli --no-default-features --features postgres,rustls

packages/app-lib/.env.example

@@ -0,0 +1,2 @@
+# SQLite database file location
+DATABASE_URL=sqlite:///tmp/Modrinth/code/packages/app-lib/.sqlx/generated/state.db