Just update a matching string with version with another predefined string version

[ezloj]

What would you like help with?

I'm trying to update a fixed string with renovate with another fixed string. It's a version of a deb package, but I want to skip configuring the datasource as it's a pain and instead update one known version of a package with another, without checking if it exists etc.

How are you running Renovate?

Running from a docker image

If you're self-hosting Renovate, tell us which platform (GitHub, GitLab, etc) and which version of Renovate.

GitLab

Please tell us more about your question or problem

I have a weird request: i just have a matching string to update. I created a custom manager which correctly matches the packages/versions. And I made a package rule:

{
      "description": "Update libcurl4 in Dockerfile",
      "matchPackageNames": ["libcurl4"],
      "matchCurrentVersion": "7.88.1-10+deb12u7",
      "replacementVersion": "7.88.1-10+deb12u8"
    }

Custom manager:

customManagers: [
    {
      "customType": "regex",
      "fileMatch": ["^Dockerfile$"],
      "matchStrings": ["\\s+(<depName>.*?)=(?<currentValue>.*?)\\s.*"],
      "datasourceTemplate": "deb"
    }
  ]

Log says regex does capture stuff:

DEBUG: manager extract durations (ms) (repository=backend/microservices/performance-analytics/flip-performance-analytics-order-processor)
       "managers": {
         "docker-compose": 1,
         "gitlabci-include": 0,
         "dockerfile": 4,
         "gitlabci": 6,
         "nvm": 9,
         "regex": 9,
         "npm": 35
       }

But it doesn't work, alas. Presumably that is because the datasource didn't work? Is there an option to skip the datasource entirely and for this usecase?

Logs (if relevant)

Logs

DEBUG: manager extract durations (ms) (repository=backend/microservices/performance-analytics/flip-performance-analytics-order-processor)
       "managers": {
         "docker-compose": 1,
         "gitlabci-include": 0,
         "dockerfile": 4,
         "gitlabci": 6,
         "nvm": 9,
         "regex": 9,
         "npm": 35
       }