```
        $args = [
            'version' => '2006-03-01',
            'region' => 'eu-west-1',
            'credentials' => CredentialsProvider::get(),
            'http' => ['decode_content' => false],
            'retries' => 6,
            'endpoint' => 'http://localstack:4572',
            'bucket_endpoint' => true
        ];

        $this->client = new S3Client($args);
        $result = $this->client->createBucket([
            'Bucket' => "localbucket",
        ]);
        $buckets = $this->client->listBuckets();
```

$result shows the `@metadata` statusCode as 200 however the returned Location which should tell me where the created bucket is, is an empty string. So it isn't creating the bucket, but I'm getting a 200 response. Just to be sure I run `listBuckets()` and it confirms nothing is being created.

docker-compose.yml settings for localstack:

```
    localstack:
        container_name: localstack
        image: localstack/localstack
        ports:
          - "4567-4593:4567-4593"
          - "${PORT_WEB_UI-8080}:${PORT_WEB_UI-8080}"
        environment:
          - HOSTNAME=pi.docker
          - SERVICES=s3,dynamodb
          - DEFAULT_REGION=eu-west-1
#            - DEBUG=${DEBUG- }
          - DATA_DIR=/tmp/localstack/data
          - PORT_WEB_UI=8080
#            - LAMBDA_EXECUTOR=local
          - DYNAMODB_ERROR_PROBABILITY=0.0
          - DOCKER_HOST=unix:///var/run/docker.sock
        volumes:
          - "${TMPDIR:-/tmp/localstack}:/tmp/localstack"
          - "/var/run/docker.sock:/var/run/docker.sock"
```

Bonus issue: as far as I can tell persistence for s3 doesn't work, I've set DATA_DIR, I've tried changing the volume to `"localstack:/tmp/localstack"` and setting a persisting volume for that. And the directory does persist, however the s3 data isn't stored here so it's reset when taking down the container.
response.headers[header_name] = query_map[param_name][0]
            if response_content_str and response_content_str.startswith('<'):
                is_bytes = isinstance(response._content, six.binary_type)
                response._content = response_content_str
                append_last_modified_headers(response=response, content=response_content_str)
                
                
                
                
                
                if method != 'GET' or not is_object_specific_request(path, headers):
                    response._content = re.sub(r'([^\?])>\n\s*<', r'\1><', response_content_str, flags=re.MULTILINE)
                
                response._content = self._update_location(response._content, bucket_name)
                
                if is_bytes:
                    response._content = to_bytes(response._content)
                
                
                
                if 'text/html' in response.headers.get('Content-Type', '') \
                        and not response_content_str.lower().startswith('<!doctype html'):
                    response.headers['Content-Type'] = 'application/xml; charset=utf-8'
                reset_content_length = True
            
            if method == 'DELETE':
                reset_content_length = True
            if reset_content_length:
                response.headers['content-length'] = len(response._content)
    def _update_location(self, content, bucket_name):