renovate-presets/docker.json

{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "description": ["Preset for use with all of thegeeklab/* docker images"],
  "extends": ["github>thegeeklab/renovate-presets:base"],
  "regexManagers": [
    {
      "fileMatch": ["^Dockerfile$"],
      "matchStrings": [
        "# renovate: datasource=(?<datasource>\\S+) depName=(?<depName>\\S+)( versioning=(?<versioning>.*?))?\\nENV .*?_VERSION=\"\\${.*:-(?<currentValue>.*)}\"\\s"
      ]
    }
  ]
}