fix: improve gitea and postgresql installation

- Improve the installation process for Gitea and PostgreSQL.
- Change the location of the Gitea config file to `/etc`.
- Add a health check for the PostgreSQL container.
- Ensure the Gitea user is created only if it doesn't exist.
- Add a restart command for Gitea to ensure it starts after.
- Improve error handling during user creation.
- Simplify PostgreSQL configuration in Gitea actions.

lib/installers/db/postgresql/postgresql_factory_.v

@@ -41,10 +41,7 @@ pub fn get(args_ ArgsGet) !&Postgresql {
 		}
 		config_load()!
 	}
-	return postgresql_global[args.name] or {
-		println(postgresql_global)
-		panic('bug in get from factory: ')
-	}
+	return postgresql_global[args.name] or { panic('bug in get from factory: ') }
 }
 
 fn config_exists(args_ ArgsGet) bool {