2024/04/03
That BuildKit supports the using OpenTelemetry to trace builds with context from the $TRACEPARENT and $TRACESTATE environment variables (directly equivalent to their w3c header counterparts): https://github.com/moby/buildkit/blob/dc23e43dc15c14dcf1871f8cc97a6e96c8f94a2e/util/tracing/env/traceenv.go#L20-L41