I noticed some random issues yesterday, and I got another today. This was the response from the CI when it failed if it helps, a 502:
{"TS":"2021-01-22T17:15:06Z","Source":"deploy","Status":"info","Message":"Docker daemon unavailable: Performing remote build..."}
{"TS":"2021-01-22T17:15:07Z","Source":"remotebuild","Status":"info","Message":""}
Build complete - in_progress
Error server returned a non-200 status code: 502