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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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DATA_DIR = os.environ.get('DATA_DIR', '').strip()
TMP_FOLDER = os.path.join(tempfile.gettempdir(), 'localstack')
for folder in [DATA_DIR, TMP_FOLDER]:
    if folder and not os.path.exists(folder):
        try:
            os.makedirs(folder)
        except Exception:
            
            
            pass
if TMP_FOLDER.startswith('/var/folders/') and os.path.exists('/private%s' % TMP_FOLDER):
    TMP_FOLDER = '/private%s' % TMP_FOLDER
HOST_TMP_FOLDER = os.environ.get('HOST_TMP_FOLDER', TMP_FOLDER)
USE_SSL = os.environ.get('USE_SSL', '').strip() in TRUE_STRINGS
DEFAULT_ENCODING = 'utf-8'
DOCKER_SOCK = os.environ.get('DOCKER_SOCK', '').strip() or '/var/run/docker.sock'
DOCKER_FLAGS = os.environ.get('DOCKER_FLAGS', '').strip()
DOCKER_CMD = os.environ.get('DOCKER_CMD', '').strip() or 'docker'
START_WEB = os.environ.get('START_WEB', '').strip() not in FALSE_STRINGS
EDGE_PORT = int(os.environ.get('EDGE_PORT') or 0) or DEFAULT_PORT_EDGE
EDGE_PORT_HTTP = int(os.environ.get('EDGE_PORT_HTTP') or 0)
PORT_WEB_UI = int(os.environ.get('PORT_WEB_UI', '').strip() or DEFAULT_PORT_WEB_UI)
PORT_WEB_UI_SSL = PORT_WEB_UI + 1
DOCKER_BRIDGE_IP = os.environ.get('DOCKER_BRIDGE_IP', '').strip()
EXTRA_CORS_ALLOWED_HEADERS = os.environ.get('EXTRA_CORS_ALLOWED_HEADERS', '').strip()
EXTRA_CORS_EXPOSE_HEADERS = os.environ.get('EXTRA_CORS_EXPOSE_HEADERS', '').strip()
DISABLE_EVENTS = os.environ.get('DISABLE_EVENTS') in TRUE_STRINGS
SKIP_INFRA_DOWNLOADS = os.environ.get('SKIP_INFRA_DOWNLOADS', '').strip()
STEPFUNCTIONS_LAMBDA_ENDPOINT = os.environ.get('STEPFUNCTIONS_LAMBDA_ENDPOINT', '').strip()
def has_docker():