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The configuration is based on the file [defaults.hjson](server/config/defaults.hjson). This file also contains documentation for all the available options. To override the defaults, you can copy the options you want to change into your local `config.hjson` file. 

Additionally, you can override any config files with environment variables. These have the same name as the config options, and are prefixed with `LEMMY_`. For example, you can override the `database.password` with 
`LEMMY__DATABASE__POOL_SIZE=10`.

An additional option `LEMMY_DATABASE_URL` is available, which can be used with a PostgreSQL connection string like `postgres://lemmy:password@lemmy_db:5432/lemmy`, passing all connection details at once.

If the Docker container is not used, manually create the database specified above by running the following commands:

```bash
# Start at the root of the Lemmy repository

cd server
./db-init.sh
```