When the product was installed using the metarepository we had the default Platform.sh configuration stored in the project, which meant that deploying to Platform.sh was much easier.

When the product is installed using Flex (and website skeleton) the default configuration is no longer copied, making deploys much harder.

The configuration was stored here:
https://github.com/ezsystems/ezplatform/blob/master/.platform.app.yaml
https://github.com/ezsystems/ezplatform/tree/master/.platform