From e97022fb020f640f7c36d35c27d71b3a3a74ceac Mon Sep 17 00:00:00 2001
From: Michael Hoennig <michael@hoennig.de>
Date: Tue, 26 Jul 2022 13:19:17 +0200
Subject: [PATCH] add documentation to backup+restore the database from
 PostgreSQL docker container

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.md b/README.md
index 8ff1af54..227a0eb6 100644
--- a/README.md
+++ b/README.md
@@ -34,6 +34,16 @@ Remove the PostgreSQL container:
 
 After the PostgreSQL container is removed, you need to create it again as shown in "Create and run ..." above.
 
+Given the container is running, to create a backup in ~/backup, run:
+
+    docker exec -i hsadmin-ng-postgres /usr/bin/pg_dump --clean --create -U postgres postgres | gzip -9 > ~/backup/hsadmin-ng-postgres2.sql.gz 
+
+
+Again, given the container is running, to restore the backup from ~/backup, run:
+
+    gunzip --stdout --keep ~/backup/hsadmin-ng-postgres.sql.gz | docker exec -i hsadmin-ng-postgres psql -U postgres -d postgres
+
+
 ### Markdown with PlantUML plugin
 
 Can you see the following diagram?