Support shared variables in database initialization scripts

[sirsimonson]

Hi Coolify team, thanks for the great work on shared variables and database resources.

I’d like to suggest support for using shared variables inside database initialization scripts, or more generally making shared variables available during DB init/startup execution.

Problem
Right now, database init scripts are useful for bootstrapping schemas, users, seed data, and extensions, but they seem limited when you want to reuse shared/team/project-level values. That makes it harder to keep database setup portable across environments.

Proposed behavior
It would be great if init scripts could access shared variables, for example:

-- example
CREATE USER app_user WITH PASSWORD '{{team.DB_PASSWORD}}';