Queue workflow using workflow_dispatch trigger and set the node version you want to compile as input, ex: v12.22.7
Wait for the run to complete
There should be a newly created release that matches the version you want for node, and it is able to run on alpine.
Once we get approval to change the current repository from private to public, then we can consume the release assets directly. In the meantime, you will need to follow instructions to check-in the compiled alpine node.js from the release assets as a Git-LFS files to https://dev.azure.com/mseng/AzureDevOps/_git/CIPlat.Externals and get it mirror into https://vstsagenttools.blob.core.windows.net/tools/nodejs

Tips for working with CIPlat.Externals repository:

The repository is huge right now, you don't want to waste your time and disk space to get those unrelated files.

Ignore LFS files during initial git clone the repo with GIT_LFS_SKIP_SMUDGE=1 git clone https://mseng@dev.azure.com/mseng/AzureDevOps/_git/CIPlat.Externals

Ignore LFS files during any git checkout or git fetch operation with GIT_LFS_SKIP_SMUDGE=1.

You do want the LFS smudge filter to run during git add and git push, make sure you don't have GIT_LFS_SKIP_SMUDGE=1 when you run git add and git push.

More Git-LFS doc is at https://github.com/git-lfs/git-lfs/tree/main/docs