The Cloudron.io team loves using products which have the source code available for introspection, audit and learning purposes (and maybe even contributing back changes). It is with this intention that Cloudron source code is made available, including the code for paid plans.
The Cloudron source code is primarily developed and maintained by the Cloudron.io team and a good chunk of their time is spent supporting paid customers. The instructions below is meant for tinkerers and developers who can deal with updates and breakages on their own. They are not supported in any way. You are welcome to create any issues or merge requests that make it simpler to play with the code.