> ## Documentation Index
> Fetch the complete documentation index at: https://fleet.aayu.sh/llms.txt
> Use this file to discover all available pages before exploring further.

# Environment Variables

> Configuration options for your Fleet instance.

Fleet is designed to work with zero configuration, but the following environment variables are available for customization.

## Variables

<ParamField env="PORT" default="3000">
  The port Fleet listens on.
</ParamField>

<ParamField env="NODE_ENV" default="development">
  Set to `production` for production deployments. Enables Next.js production optimizations.
</ParamField>

<ParamField env="ROOM_TTL_MINUTES" default="30">
  How many minutes a room survives after the last user leaves. Minimum: `1`.
</ParamField>

## Example `.env`

```bash theme={null}
PORT=3000
NODE_ENV=production
ROOM_TTL_MINUTES=30
```

## Docker Compose

Pass environment variables in `docker-compose.yml`:

```yaml theme={null}
services:
  fleet:
    build: .
    ports:
      - "3000:3000"
    environment:
      - NODE_ENV=production
      - PORT=3000
      - ROOM_TTL_MINUTES=30
```