You can run Docker commands as a part of your build process by adding them to your [build spec](/content/docs/adding-a-build-spec/index.html). However, Docker is not enabled by default.

### Enable Docker

Note that, Docker is enabled by default for SST apps on all our plans.

For Serverless Framework apps, the Docker daemon is disabled by default in the build machine.

Before enabling Docker, just make sure that:

- You are on one of our [paid plans](/content/pricing/index.html).
- The service in question is using one of our [General Purpose build images](/content/docs/seed-build-images#build-images/index.html).

Next, head over to the service’s settings; Pipeline > click on the service.

Here you can toggle the setting to **Enable Docker**.

### Running LocalStack on Seed

Once you’ve got Docker enabled, you can run tests using [LocalStack](https://github.com/localstack/localstack) on Seed by adding something like the following in your `seed.yml`.

```
Copybefore_compile:
  - >
    docker run -d --rm
    -p 4567-4608:4567-4608
    -e DOCKER_HOST=unix:///var/run/docker.sock
    -v /tmp/localstack:/tmp/localstack
    -v /var/run/docker.sock:/var/run/docker.sock
    localstack/localstack
```

Read more about [the build spec options here](/content/docs/adding-a-build-spec/index.html).