From 7a1add6883aded549223d1959c091ac234fcdb00 Mon Sep 17 00:00:00 2001
From: David Leadbeater <dgl@dgl.cx>
Date: Fri, 7 Mar 2025 21:33:04 +1100
Subject: [PATCH] build: Make /prometheus group writable (#16073)

As outlined in #3441 this is the minimal change needed to allow
changing UID/GID in Docker when combined with a supplementary group.

Signed-off-by: David Leadbeater <dgl@dgl.cx>
---
 Dockerfile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Dockerfile b/Dockerfile
index 1e46a62f95..31e863d8a0 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -14,7 +14,7 @@ COPY NOTICE                                 /NOTICE
 COPY npm_licenses.tar.bz2                   /npm_licenses.tar.bz2
 
 WORKDIR /prometheus
-RUN chown -R nobody:nobody /etc/prometheus /prometheus
+RUN chown -R nobody:nobody /etc/prometheus /prometheus && chmod g+w /prometheus
 
 USER       nobody
 EXPOSE     9090