diff --git a/backup/db_backup.sh b/backup/db_backup.sh
new file mode 100644
index 0000000..f61c0fc
--- /dev/null
+++ b/backup/db_backup.sh
@@ -0,0 +1 @@
+docker exec -it oj-postgres pg_dumpall -c -U onlinejudge > db_backup_`date +%Y_%m_%d"_"%H_%M_%S`.sql