docker-duplicacy/renovate.json

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "customManagers": [
    {
      "customType": "regex",
      "description": "Track duplicacy version from ARG in Dockerfile",
      "managerFilePatterns": ["/^Dockerfile$/"],
      "matchStrings": ["ARG VERSION=(?<currentValue>[\\d.]+)\\n"],
      "depNameTemplate": "duplicacy",
      "datasourceTemplate": "github-releases",
      "packageNameTemplate": "gilbertchen/duplicacy"
    }
  ]
}