renovate.json

{
  "extends": [
    "config:recommended",
    "customManagers:dockerfileVersions",
    "group:rubyOnRails"
  ],
  "packageRules": [
    {
      "managers": [
        "asdf",
        "bundler",
        "dockerfile",
        "devcontainer"
      ],
      "matchPackageNames": [
        "ruby",
        "mcr.microsoft.com/devcontainers/ruby",
        "registry.docker.com/library/ruby"
      ],
      "groupName": "ruby"
    }
  ]
}