magento2 – Problem setting up a custom payment gateway in the Magento cloud

So I'm working on a custom payment gateway extension. It is installed in my test server and works fine. I'm just trying to install it in Magento Cloud.

I follow the installation instructions and can see that my database changes are there, but my payment gateway is not displayed in the business configuration.

Here is my repo: https://github.com/apruve/apruve-magento2

Any ideas?