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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.
...

## Expected behavior
Docker expects the Windows client path value of the `-v` flag to begin with `/host_mtn/`.
...

## 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'".
...

# 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.
...

try:
        with open(os.devnull, 'w') as devnull:
            subprocess.check_output('docker ps', stderr=devnull, shell=True)
        return True
    except Exception:
        return False
def is_linux():
    try:
        out = subprocess.check_output('uname -a', shell=True)
        out = out.decode('utf-8') if isinstance(out, six.binary_type) else out
        return 'Linux' in out
    except subprocess.CalledProcessError:
        return False
LAMBDA_EXECUTOR = os.environ.get('LAMBDA_EXECUTOR', '').strip()
if not LAMBDA_EXECUTOR:
    LAMBDA_EXECUTOR = 'docker'
    if not has_docker():
        LAMBDA_EXECUTOR = 'local'
LAMBDA_FALLBACK_URL = os.environ.get('LAMBDA_FALLBACK_URL', '').strip()
CONFIG_ENV_VARS = ['SERVICES', 'HOSTNAME', 'HOSTNAME_EXTERNAL', 'LOCALSTACK_HOSTNAME', 'LAMBDA_FALLBACK_URL',
                   'LAMBDA_EXECUTOR', 'LAMBDA_REMOTE_DOCKER', 'LAMBDA_DOCKER_NETWORK', 'LAMBDA_REMOVE_CONTAINERS',
                   'USE_SSL', 'DEBUG', 'KINESIS_ERROR_PROBABILITY', 'DYNAMODB_ERROR_PROBABILITY', 'PORT_WEB_UI',
                   'START_WEB', 'DOCKER_BRIDGE_IP', 'DEFAULT_REGION', 'LAMBDA_JAVA_OPTS', 'LOCALSTACK_API_KEY',
                   'LAMBDA_CONTAINER_REGISTRY', 'TEST_AWS_ACCOUNT_ID', 'DISABLE_EVENTS', 'EDGE_PORT',
                   'EDGE_PORT_HTTP', 'SKIP_INFRA_DOWNLOADS', 'STEPFUNCTIONS_LAMBDA_ENDPOINT']
for key, value in six.iteritems(DEFAULT_SERVICE_PORTS):
    clean_key = key.upper().replace('-', '_')
    CONFIG_ENV_VARS += [clean_key + '_BACKEND', clean_key + '_PORT', clean_key + '_PORT_EXTERNAL']
def ping(host):