docs: def restore_db(release=None):
      """
      Restores backup back to version, uses current version by default.
      """
  
      if not release:
          release = paths.get_current_release_name()
  
      if not release:
          raise Exception("Release %s was not found" % release)
  
      backup_file = "postgresql/%s.sql.gz" % release
      backup_path = paths.get_backup_path(backup_file)
  
      if not env.exists(backup_path):
          raise Exception("Backup file %s not found" % backup_path)
  
      with context_managers.shell_env(PGPASSWORD=env.psql_password):
          env.run("pg_restore --clean -h localhost -d %s -U %s '%s'" % (
              env.psql_db,
              env.psql_user,
              backup_path)
          )