{
  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
  "customManagers": [
    {
      "customType": "regex",
      "datasourceTemplate": "docker",
      "description": "compose.yaml's Go, which the shell default hides from the docker-compose manager",
      "managerFilePatterns": [
        "/^compose\\.yaml$/"
      ],
      "matchStrings": [
        "image: (?<depName>golang):\\$\\{GO_VERSION:-(?<currentValue>[^}]+)\\}"
      ]
    }
  ],
  "extends": [
    "config:recommended"
  ]
}