# DockerComposeEnvironmentResource.configureEnvFile

- Module: [Aspire.Hosting.Docker](/reference/api/typescript/aspire.hosting.docker.md)
- Defined on: [DockerComposeEnvironmentResource](/reference/api/typescript/aspire.hosting.docker/dockercomposeenvironmentresource.md)
- Version: `13.4.0`
- Kind: `method`

Configures the captured environment variables for the Docker Compose environment before they are written to the .env file.

## Definition

```typescript
interface DockerComposeEnvironmentResource {
  // ... omitted for brevity
  configureEnvFile(configure: (obj: Dict<string,Aspire.Hosting.Docker/Aspire.Hosting.Docker.CapturedEnvironmentVariable>) => Promise<void>): DockerComposeEnvironmentResource;
}
```

## Signature

```typescript
configureEnvFile(configure: (obj: Dict<string,Aspire.Hosting.Docker/Aspire.Hosting.Docker.CapturedEnvironmentVariable>) => Promise<void>): DockerComposeEnvironmentResource
```

## Parameters

- `configure` (`(obj: Dict<string,Aspire.Hosting.Docker/Aspire.Hosting.Docker.CapturedEnvironmentVariable>) => Promise<void>`)

## Returns

[DockerComposeEnvironmentResource](/reference/api/typescript/aspire.hosting.docker/dockercomposeenvironmentresource.md) `builder`

## Defined on

- [DockerComposeEnvironmentResource](/reference/api/typescript/aspire.hosting.docker/dockercomposeenvironmentresource.md) -- `handle`