From a2bf99d42c078ab6e45aafb3d7aa3f6f5d4e1f00 Mon Sep 17 00:00:00 2001
From: HonkingGoose <34918129+HonkingGoose@users.noreply.github.com>
Date: Mon, 14 Feb 2022 09:50:37 +0100
Subject: [PATCH] docs: add root group requirements (#14086)

---
 docs/usage/self-hosted-configuration.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/docs/usage/self-hosted-configuration.md b/docs/usage/self-hosted-configuration.md
index 66b65a9320..6d9f045013 100644
--- a/docs/usage/self-hosted-configuration.md
+++ b/docs/usage/self-hosted-configuration.md
@@ -280,6 +280,16 @@ e.g.
 }
 ```
 
+If you use `binarySource=docker|install` read the section below.
+
+If you need to change the Docker user please make sure to use the root (`0`) group, otherwise you'll get in trouble with missing file and directory permissions.
+
+Like this:
+
+```
+> export RENOVATE_DOCKER_USER="$(id -u):0" # 500:0 (username:root)
+```
+
 ## dryRun
 
 ## endpoint
-- 
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