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# Type of request: This is a ...

[x] bug report
[ ] feature request

# Detailed description
When `mountCode: true` for a serverless.yml deployment to localstack on Windows, Localstack mounts the wrong path.
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## Expected behavior
Docker expects the Windows client path value of the `-v` flag to begin with `/host_mtn/`.
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## Actual behavior
Localstack does not add this to the Windows client path. This causes the volume sharing to fail. Once one tries to invoke a lambda without the proper volume sharing, the lambda fails with an error along the lines of "can't find no module 'lambda_name'".
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# Steps to reproduce
1. In your `serverless.yml` set `mountCode: true` 
2. In your `docker-compose.yml` set the environment variable `LAMBDA_REMOTE_DOCKER: "0"` for the localstack container
3. Deploy some test lambda to the localstack container
4. Attempt to invoke with `awslocal lambda invoke --function-name LAMBDA_NAME out.txt` and replace LAMBDA_NAME with the name of your test lambda.
5. Note the invocation failure.

## Command used to start LocalStack
Started via a `docker-compose.yml` file. Pretty basic stuff.
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## Client code (AWS SDK code snippet, or sequence of "awslocal" commands)
Just the `awslocal` invoke command outlined above.
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try:
        return event['Records'][0][key]
    except KeyError:
        return None
def is_java_lambda(lambda_details):
    runtime = getattr(lambda_details, 'runtime', lambda_details)
    return runtime in [LAMBDA_RUNTIME_JAVA8, LAMBDA_RUNTIME_JAVA11]
def is_nodejs_runtime(lambda_details):
    runtime = getattr(lambda_details, 'runtime', lambda_details)
    return runtime.startswith('nodejs')
def _store_logs(func_details, log_output, invocation_time=None, container_id=None):
    log_group_name = '/aws/lambda/%s' % func_details.name()
    container_id = container_id or short_uid()
    invocation_time = invocation_time or int(time.time() * 1000)
    invocation_time_secs = int(invocation_time / 1000)
    time_str = time.strftime('%Y/%m/%d', time.gmtime(invocation_time_secs))
    log_stream_name = '%s/[LATEST]%s' % (time_str, container_id)
    return store_cloudwatch_logs(log_group_name, log_stream_name, log_output, invocation_time)
class LambdaExecutor(object):
    """ Base class for Lambda executors. Subclasses must overwrite the _execute method """
    def __init__(self):