This has been going on for about a week, I can still build locally but my CI process uses remote building.
flyctl deploy -c fly-production.toml --wait-timeout 600
==> Verifying app config
Validating fly-production.toml
Platform: machines
ā Configuration is valid
ā Verified app config
==> Building image
WARN Failed to start remote builder heartbeat: server returned a non-200 status code: 500
Error: failed to fetch an image or build from source: error connecting to docker: server returned a non-200 status code: 500
Cleaning up project directory and file based variables