Feature request: Add ability to specify runner labels

[hisaac]

GitHub's runner includes the ability to set labels for the runner instance. This can be useful for GitHub Actions workflows to more flexibly run on the correct VM image.

I would like the ability to specify the labels used by the Orka runner, either through a dedicated labels environment variable or some other mechanism.

Note: I would be willing to implement this, I would just need some guidance on where to start, and how to test it.

[hisaac]

This request is similar in scope to the series of Issues opened by @celanthe a few weeks ago:

• Environment Variable Override for Runner Groups #32
• GitHub API Integration for Custom Runner Groups #33
• Error Handling and Validation for Custom Runner Groups #34
• Documentation and Onboarding for Configuring Custom Runner Groups #35

[relwell]

@hisaac definitely give it a shot -- I would expect that the labels would be part of the Runner type that we define, and placed in the JSON body of the RUNNER environment variable like we have with the name and group ID.

There are a couple of ways to test your changes. With an Orka cluster, then you can run a Linux VM networked to the cluster running your branch of the code. Alternately, you can run the actions runner locally if your machine can speak to the Orka cluster.

[marinofelipe]

+1 @hisaac, I was just checking whether the RUNNER variable supports labels; it would be pretty good to have it, and it would be consistent with what the GitHub Actions ecosystem offers.

Count on me if you'd like any help getting it done :)!

[celanthe]

@hisaac @marinofelipe Thank you so much for your potential contributions towards this effort. Please let me know how I can be of assistance! :)