From 78e5f96820b665c1e5876cff764bb54e7f54c54a Mon Sep 17 00:00:00 2001
From: "Tom C (DLS)" <101418278+coretl@users.noreply.github.com>
Date: Fri, 24 Jul 2026 12:46:50 +0100
Subject: [PATCH] Disable Renovate Dockerfile base-image updates in downstream
 repos

Downstream repos generated from this template were getting Renovate
PRs (e.g. &quot;Update ubuntu Docker tag&quot;) for base images that are only
ever meant to be bumped centrally, in template/Dockerfile.jinja.
Add a packageRule to renovate.json.jinja that disables the dockerfile
manager for ubuntu and ghcr.io/diamondlightsource/ubuntu-devcontainer,
mirroring the existing pyenv and github-actions disable rules.

Reported in bluesky/scanspec#211.
---
 template/renovate.json.jinja | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/template/renovate.json.jinja b/template/renovate.json.jinja
index 016ea7ae..5e52f7a6 100644
--- a/template/renovate.json.jinja
+++ b/template/renovate.json.jinja
@@ -36,6 +36,17 @@
         "github-actions"
       ],
       "enabled": false
+    },
+    {
+      "description": "Disable Dockerfile base images that are managed by python-copier-template",
+      "matchManagers": [
+        "dockerfile"
+      ],
+      "matchDepNames": [
+        "ubuntu",
+        "ghcr.io/diamondlightsource/ubuntu-devcontainer"
+      ],
+      "enabled": false
     }
   ]
 }