From 6c4125db0c24c8ef79da58fe24d4a9362e758df4 Mon Sep 17 00:00:00 2001
From: William S Fulton <wsf@fultondesigns.co.uk>
Date: Mon, 18 Oct 2021 08:10:36 +0100
Subject: [PATCH] GHA: apt-get update for Octave

To fix:
Failed to fetch http://azure.archive.ubuntu.com/ubuntu/pool/main/m/mesa/libgl1-mesa-dev_21.0.3-0ubuntu0.3~20.04.2_amd64.deb  404  Not Found
---
 Tools/CI-linux-install.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Tools/CI-linux-install.sh b/Tools/CI-linux-install.sh
index 7daa55e3e..80e7c1fb9 100644
--- a/Tools/CI-linux-install.sh
+++ b/Tools/CI-linux-install.sh
@@ -73,6 +73,7 @@ case "$SWIGLANG" in
 		$RETRY sudo apt-get -qq install ocaml camlp4
 		;;
 	"octave")
+		$RETRY sudo apt-get -qq update
 		$RETRY sudo apt-get -qq install liboctave-dev
 		;;
 	"php")