From a8e2464b99601ec16e627d02d6b56f8fc5b831db Mon Sep 17 00:00:00 2001
From: Joseph Nuthalapati <njoseph@riseup.net>
Date: Sun, 1 Mar 2020 17:42:21 +0530
Subject: [PATCH] ci: Optimize refreshing Docker image for GitLabCI

Signed-off-by: Joseph Nuthalapati <njoseph@riseup.net>
Reviewed-by: James Valleroy <jvalleroy@mailbox.org>
---
 Dockerfile.gitlabci | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Dockerfile.gitlabci b/Dockerfile.gitlabci
index 6655b404f..31a5093b3 100644
--- a/Dockerfile.gitlabci
+++ b/Dockerfile.gitlabci
@@ -1,5 +1,9 @@
 # SPDX-License-Identifier: AGPL-3.0-or-later
-FROM debian:unstable
+
+# This is an IaC pattern called "reheating a server template".
+# This is very fast but can accumulate cruft over time.
+# Use debian:unstable if you want to build a fresh image.
+FROM registry.salsa.debian.org/freedombox-team/plinth:gitlabci
 
 USER root
 COPY . /plinth