renovate-config/automerge-docker.json

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "description": "Preset for automerging docker images updated",
  "packageRules": [
    {
      "matchPackageNames": [
        "alpine",
        "go"
      ],
      "automerge": true,
      "automergeType": "branch"
    }
  ]
}