Resolved
This incident is now resolved, Depot builders should be working correctly now.
Identified
We're still rolling out configurations to mitigate this issue. Note that this issue only affects users with builders in some US regions. In the meanwhile, trying the recommended workarounds, or relocating your builder (Settings -> App builders) to either Dallas, Chicago or Toronto should allow your builds to complete successfully.
Identified
We've identified the root cause for this issue and are implementing mitigations.
Investigating
We are investigating sporadic build failures mentioning Docker rate limits on "unauthenticated pulls" and error 429.
In the meantime, workarounds to try in order are:
Use fly deploy --depot=false
Use fly deploy --buildkit
Install Docker locally and use --local-only with Fly deploy