Can't pull docker image from fly.io registry after github actions outage

[michael]

Deploying to Fly via GitHub Action failing

We may have found the issue and a workaround. It looks like sometime earlier today GitHub updated the ubuntu runner which bumped the version of BuildKit from 0.9.1 to 0.10.0. Images built with this version of BuildKit are returning a 404 when our backend attempts to fetch the image manifest from the target registry before a deployment. This is happening for both registry.fly.io and Docker Hub. Now, I don’t see anything in the BuildKit 0.10.0 release notes that looks related, but something chang…