Pretty much yes. Their build running machines are very powerful and loaded with lots of typical libraries. They specifically state that GHA should not be used a

Pretty much yes. Their build running machines are very powerful and loaded with lots of typical libraries. They specifically state that GHA should not be used as a general serverless compute platform in their TOS. I think that needs to be said because its perfectly capable of being a pretty robust FaaS platform in general- but certainly its totally valid to use as FaaS for git or anything that could be GitHub webhook, like PR comments, milestone updates, label creation, etc.