Dockerfile

@@ -6,7 +6,9 @@ LABEL maintainer="Robert Kaussow <mail@geeklabor.de>" \
     org.label-schema.vendor="Robert Kaussow" \
     org.label-schema.schema-version="1.0"
 
-ARG VAULT_VERSION=2.15.1
+ARG VAULT_VERSION
+# renovate: datasource=github-releases depName=dani-garcia/bw_web_builds
+ENV VAULT_VERSION="${VAULT_VERSION:-2.15.1}"
 
 ADD overlay/ /
 

Makefile

@@ -1,3 +1,4 @@
+# renovate: datasource=github-releases depName=dani-garcia/bitwarden_rs
 export BUILD_VERSION ?= 1.16.1
 export DEBIAN_FRONTEND ?= noninteractive
 export LANG ?= C.UTF-8

renovate.json

@@ -2,5 +2,19 @@
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
   "extends": [
     "config:base"
+  ],
+  "regexManagers": [
+    {
+      "fileMatch": ["^Dockerfile$"],
+      "matchStrings": [
+        "datasource=(?<datasource>.*?) depName=(?<depName>.*?)( versioning=(?<versioning>.*?))?\\sENV .*?_VERSION=\"\\${.*:-(?<currentValue>.*)}\"\\s"
+      ]
+    },
+    {
+      "fileMatch": ["^Makefile$"],
+      "matchStrings": [
+        "datasource=(?<datasource>.*?) depName=(?<depName>.*?)( versioning=(?<versioning>.*?))?\\sexport .*?_VERSION \?= (?<currentValue>.*)\\s"
+      ]
+    }
   ]
 }