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Re:Ask HN: Alternatives to GitHub by srcreigh on Monday August 17, 2026 @02:51PM (#49335819)
Yeah. MicroVMs make hosting runners pretty straightforward. I had codex make a forgejo runner controller which pulls forgejo actions and creates kubernetes jobs for them.

It was a bit of a pain to configure firecracker with k3s.

It really can’t be understated how much easier hosting CI is with microvms as the security boundary.

Re:Ask HN: Alternatives to GitHub by Bnjoroge on Monday August 17, 2026 @04:32PM (#49337225)
Agree. I'm always surprised Github still uses huge fat VMs. I imagine this is one of the things that make it much painful at scale. The tricky part with microvms are getting them to run cross-platform. We use an awesome project called smolvm that builds on libkrun and makes this alot easier. As an aside, how have forgejo actions worked for you in practice?
Re:Ask HN: Alternatives to GitHub by Melatonic on Tuesday August 18, 2026 @03:14AM (#49342421)
Any other recommendations for microvm ? Need to mess around with them again. Always seemed like the future
Re:Ask HN: Alternatives to GitHub by Bnjoroge on Tuesday August 18, 2026 @10:29AM (#49346137)
If you want something cross-platform, smolvm or microsandbox are great options(built on top of libkrun vmm)! If you are looking for linux-only, the typical choices are firecracker-based solutions.
Re:Ask HN: Alternatives to GitHub by srcreigh on Tuesday August 18, 2026 @03:52PM (#49351676)
Re Forgejo actions, I'm just toying around.

Their v15 release (apr 16) really enabled k8s native runners. They added an ephemeral runner API and a bunch of APIs to get jobs. That's what im using to do k8s autoscaling