fix(scripts): ensure postgres env aliases during restore

README.md

@@ -94,6 +94,18 @@ cd ~/guilan-ace-deployment
 docker compose up -d --build
 ```
 
+If a new server fails with `Database is uninitialized and superuser password is not specified`,
+make sure `backend/guilan-ace-backend/.env` contains `POSTGRES_DB`, `POSTGRES_USER`, and
+`POSTGRES_PASSWORD` matching `DB_NAME`, `DB_USER`, and `DB_PASSWORD`. Then remove the failed
+empty database volume and rerun the restore:
+```bash
+cd ~/guilan-ace-deployment
+docker compose down
+docker volume rm east-guilan_postgres_data
+./scripts/restore-from-s3.sh latest
+docker compose up -d --build
+```
+
 Restore only selected parts by setting skip flags:
 ```bash
 RESTORE_SKIP_ENV=1 ./scripts/restore.sh backups/guilan-ace-backup-YYYYMMDD-HHMMSS.tar.gz