From 929fc287bebd5110f837c7340bc0e1eb91b5b128 Mon Sep 17 00:00:00 2001
From: Alan Hodgson <ahodgson@simkin.ca>
Date: Mon, 15 Jan 2024 14:58:13 -0800
Subject: [PATCH] Recommend better dpkg options for upgrading OS packages.

Closes https://github.com/phusion/passenger-docker/issues/247
---
 README.md | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/README.md b/README.md
index c3cd7636..5309e102 100644
--- a/README.md
+++ b/README.md
@@ -515,7 +515,7 @@ While we release passenger-docker images with the latest OS updates from time to
 
 To upgrade the OS in the image, run this in your Dockerfile:
 
-    RUN apt-get update && apt-get upgrade -y -o Dpkg::Options::="--force-confold"
+    RUN apt-get update && apt-get -y -o Dpkg::Options::="--force-confdef" -o Dpkg::Options::="--force-confold" upgrade
 
 <a name="upgrading_passenger"></a>
 ### Upgrading Passenger to the latest version