Update golang Docker tag to v1.25

Reviewed-on: #22

Dockerfile

@@ -1,4 +1,4 @@
-FROM golang:1.23-alpine3.20 as builder
+FROM golang:1.25-alpine3.22 as builder
 # Do not remove `git` here, it is required for getting runner version when executing `make build`
 RUN apk add --no-cache make git
 
@@ -10,7 +10,7 @@ WORKDIR /opt/src/act_runner
 
 RUN make clean && make build
 
-FROM docker:25.0.5-dind
+FROM docker:27.5.1-dind
 USER root
 RUN apk add --no-cache \
   git bash supervisor python3 py3-pip

renovate.json

@@ -1,10 +1,10 @@
-
 {
     "extends": [":automergeMinor", ":automergePr", ":automergeRequireAllStatusChecks", ":dependencyDashboard", ":disableRateLimiting", ":rebaseStalePrs"],
     "baseBranches": ["develop"],
     "major": {
       "dependencyDashboardApproval": true
     },
+    "minimumReleaseAge": "7 days",
     "customManagers": [
         {
           "customType": "regex",
@@ -12,6 +12,16 @@
           "matchStrings": ["ARG ACT_VERSION=(?<currentValue>.*)"],
           "datasourceTemplate": "gitea-releases",
           "depNameTemplate": "gitea/act_runner"
+        },
+        {
+          "description": "Manage Alpine OS versions in container image tags",
+          "customType": "regex",
+          "fileMatch": ["Dockerfile$"],
+          "matchStrings": [
+            "FROM\\s+(?<depName>[\\S]+?):(?<currentValue>[^@\\s]+)(?:@(?<currentDigest>sha256:[a-f0-9]+))?"
+          ],
+          "versioningTemplate": "regex:^(?<compatibility>[\\S]*\\d+\\.\\d+(?:\\.\\d+)?(?:[\\S]*)?-alpine-?)(?<major>\\d+)\\.(?<minor>\\d+)(?:\\.(?<patch>\\d+))?$",
+          "datasourceTemplate": "docker"
         }    
       ],
       "packageRules": [