Hello, can someone help me? Why when i use supabase in docker i can`t create a project, there is just no button, but it is in web version?

Are you sure the organizations and project management features are available in self-hosted? I think they are only used in the hosted version.

I do not quite understand whether it is possible to get the full functionality of self-hosted

i dont think that's available yet

can I now, for example, create a project using the web version, but host the database on my server and administer selfhosted

im not aware of any solutions available for that. but a workaround could just be to use your database to manage the concept of projects?