Hi, I deployed my maven function and then invoked as below. But when I try to run docker image I get ClassNot Found error.

```
C02TX00EHV2H:hellome xx$ serverless invoke local  -f hellome --log
Serverless: Packaging service...
Serverless: Building Docker image...
START RequestId: fc013012-d402-1cf2-ca95-2ec1ab9f45ab Version: $LATEST

2019-11-25 02:30:59 fc013012-d402-1cf2-ca95-2ec1ab9f45ab INFO  Handler:18 - received: null



END RequestId: fc013012-d402-1cf2-ca95-2ec1ab9f45ab
REPORT RequestId: fc013012-d402-1cf2-ca95-2ec1ab9f45ab	Init Duration: 5309.67 ms	Duration: 3192.98 ms	Billed Duration: 3200 ms	Memory Size: 1536 MB	Max Memory Used: 86 MB	


{"statusCode":200,"body":"{\"message\":\"Go Serverless v1.x! Your function executed successfully!\",\"input\":null}","headers":{"X-Powered-By":"AWS Lambda \u0026 serverless"},"isBase64Encoded":false}

C02TX00EHV2H:hellome xx$ docker images
REPOSITORY                                              TAG                 IMAGE ID            CREATED             SIZE
lambci/lambda                                           java11              b4f3365c08ef        28 hours ago        395MB

C02TX00EHV2H:hellome xx$ docker run -v "$PWD":/var/task lambci/lambda:java11 com.serverless.Handler'{"resource": "testme", "httpMethod": "GET"}'
START RequestId: 86d2fab4-3805-1d43-d11a-6ec85b3c4347 Version: $LATEST
Class not found: com.serverless.Handler{"resource": "testme", "httpMethod": "GET"}: java.lang.ClassNotFoundException
java.lang.ClassNotFoundException: com.serverless.Handler{"resource": "testme", "httpMethod": "GET"}
	at java.base/java.net.URLClassLoader.findClass(Unknown Source)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	at java.base/java.lang.Class.forName0(Native Method)
	at java.base/java.lang.Class.forName(Unknown Source)
```

Below is my Handler class : (I used Maven, Java 11 runtime)
```
package com.serverless;

import com.amazonaws.services.lambda.runtime.Context;
import com.amazonaws.services.lambda.runtime.RequestHandler;
import java.util.Collections;
import java.util.Map;
import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

public class Handler implements RequestHandler<Map<String, Object>, ApiGatewayResponse> {
  private static final Logger LOG = LogManager.getLogger(Handler.class);

  public Handler() {
  }

  public ApiGatewayResponse handleRequest(Map<String, Object> input, Context context) {
    LOG.info("received: {}", input);
    Response responseBody = new Response("Go Serverless v1.x! Your function executed successfully!", input);
    return ApiGatewayResponse.builder().setStatusCode(200).setObjectBody(responseBody).setHeaders(Collections.singletonMap("X-Powered-By", "AWS Lambda & serverless")).build();
  }
}
```
environment['DOCKER_LAMBDA_USE_STDIN'] = '1'
        return event_body.encode()
    def prepare_execution(self, func_arn, env_vars, runtime, command, handler, lambda_cwd):
        entrypoint = ''
        if command:
            entrypoint = ' --entrypoint ""'
        else:
            command = '"%s"' % handler
        
        network = config.LAMBDA_DOCKER_NETWORK
        network_str = '--network="%s"' % network if network else ''
        if network == 'host':
            port = str(self.next_port + self.port_offset)
            env_vars['DOCKER_LAMBDA_API_PORT'] = port
            env_vars['DOCKER_LAMBDA_RUNTIME_PORT'] = port
            self.next_port = (self.next_port + 1) % self.max_port
        env_vars_string = ' '.join(['-e {}="${}"'.format(k, k) for (k, v) in env_vars.items()])
        debug_docker_java_port = '-p {p}:{p}'.format(p=Util.debug_java_port) if Util.debug_java_port else ''
        docker_cmd = self._docker_cmd()
        docker_image = Util.docker_image_for_runtime(runtime)
        rm_flag = Util.get_docker_remove_flag()
        if config.LAMBDA_REMOTE_DOCKER:
            cmd = (
                'CONTAINER_ID="$(%s create -i'
                ' %s'  
                ' %s'  
                ' %s'  
                ' %s'  
                ' %s'