Changed connection string to admin

.env.example

@@ -8,7 +8,7 @@ HCLOUD_TOKEN=
 # ----- Application Envs ----- #
 # database credentials (postgres)
 # postgresql://{username}:{password}@{host}:{port}/{database}
-MAIN_DB_URL=postgresql://user:password@localhost:5432/main
+MAIN_DB_URL=postgresql://admin:password@localhost:5432/main
 
 # redis credentials
 # redis://{username}:{password}@{host}:{port}