fix(renovate): update configuration

Dockerfile

@@ -1,6 +1,5 @@
 FROM docker.io/library/ubuntu:24.04 AS download
 
-# renovate: datasource=github-releases depName=docker/compose
 ARG DC_VERSION=v2.40.3
 
 RUN NAME=docker-compose-$(uname | tr [:upper:] [:lower:])-$(uname -m); \

renovate.json

@@ -4,9 +4,11 @@
     {
       "customType": "regex",
       "fileMatch": [
+        "^Dockerfile$",
         "^README\\.md$"
       ],
       "matchStrings": [
+        "ARG DC_VERSION=(?<currentValue>.*)",
         "IMAGE_VERSION=(?<currentValue>.*)"
       ],
       "datasourceTemplate": "github-releases",