STDERR: the input device is not a TTY

I’m trying to create a site remotely (via php) `ee site create example.com --type=wp`, but it’s failing because of `STDERR: the input device is not a TTY` error. [Ref](https://stackoverflow.com/a/43099210/398123)

```
ee.DEBUG: -----------------------
ee.INFO: Downloading and configuring WordPress.
ee.DEBUG: -----------------------
ee.DEBUG: COMMAND: docker-compose exec --user=root php chown -R www-data: /var/www/
ee.DEBUG: STDERR: the input device is not a TTY
ee.DEBUG: RETURN CODE: 1
ee.DEBUG: -----------------------
ee.DEBUG: -----------------------
ee.DEBUG: COMMAND: docker-compose exec --user='www-data' php wp core download --path=/var/www/htdocs --locale='en_US'
ee.DEBUG: STDERR: the input device is not a TTY
ee.DEBUG: RETURN CODE: 1
ee.DEBUG: -----------------------
ee.ERROR: Unable to download wp core.
ee.DEBUG: -----------------------
```