How do I make Renovate bot to update only LTS versions of nodejs

[tal-rofe]

I have configured Renovate with renovate.config.js:

{
	"extends": ["config:base", ":semanticCommitTypeAll(chore)"],
	"packageRules": [
		{
			"updateTypes": ["minor", "patch"],
			"automerge": true
		}
	]
}

Moreover, I've added the following file (dedicated to this question purpose) called .nvmrc:
lts/*

I expected Renovate to upgrade my repository used Node.js versions to only LTS versions (so basically 16) but it updated to 17.
For example - it tried the following:
16-alpine -> 17-alpine

I guess I have some incorrect configuration?

How can I make Renovate to update only LTS versions of Node.js?

[rarkins]

Not possible due to the -alpine suffix. Our node versioning understands LTS but not suffixes like that.

[tal-rofe]

@rarkins
Is it something that will be supported in the future?

[viceice]

I think there is an open issue about it.

[rarkins]

#5990

[ponchofiesta]

@rarkins Renovate now understands the suffix (I assume). Is it now only possible to update to LTS versions?

[rarkins]

You can now use versionCompatibility to configure this. Make -alpine the compatibility part