From 31c59aea24f8516f862ca136766168016e840593 Mon Sep 17 00:00:00 2001
From: Ben Siddans <96931223+bsiddans@users.noreply.github.com>
Date: Sun, 5 Mar 2023 06:16:46 +1100
Subject: [PATCH] Add words to README to draw attention to the use of
 upgrades.exclude, potential for files to be removed during
 installation/upgrades. (#1862)

---
 README.md | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/README.md b/README.md
index 39a9e893..267df3b8 100644
--- a/README.md
+++ b/README.md
@@ -91,6 +91,10 @@ $ docker run -d \
 -v theme:/var/www/html/themes/<YOUR_CUSTOM_THEME> \
 nextcloud
 ```
+If mounting additional volumes, you should note that data inside the main folder (`/var/www/html`) may be removed during installation and upgrades, unless listed in [upgrade.exclude](https://github.com/nextcloud/docker/blob/master/upgrade.exclude). You should consider:
+- Confirming that [upgrade.exclude](https://github.com/nextcloud/docker/blob/master/upgrade.exclude) contains the files and folders that should persist during installation and upgrades; or 
+- Mounting storage volumes to locations outside of `/var/www/html`.
+
 
 ## Using the Nextcloud command-line interface
 To use the [Nextcloud command-line interface](https://docs.nextcloud.com/server/latest/admin_manual/configuration_server/occ_command.html) (aka. `occ` command):
-- 
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