OpenTelemetry support

[tonistiigi]

Depends on:

• add current tracing context detection and exec propagation moby/buildkit#2163
• cli incompatible with moby master

docker run -d --name jaeger  -p 6831:6831/udp -p 16686:16686 jaegertracing/all-in-one
docker buildx create --driver-opt network=host --driver-opt image=moby/buildkit:master --driver-opt env.JAEGER_TRACE=localhost:6831

[crazy-max]

Just tested myself, works great.

Not related to this PR but I also encountered an issue that seems linked to moby/buildkit#2162: SendMsg called after CloseSend

79ec0a42e37a50928d8911c2682f691a.json.zip

[tonistiigi]

@crazy-max Do you have a reproducer for this as haven't seen this myself. Not a blocker for this PR but create a tracking issue in Buildkit if you do.

[crazy-max]

Yes I have a reproducer on a public repo. Will create an issue on BuildKit repo.

[crazy-max]

@tonistiigi Looks like it has been fixed, can't repro anymore with moby/buildkit:v0.9.0-rc1.

[morlay]

Nice feature!

log with traceID and spanID will be better. moby/buildkit#2235

[tonistiigi]

@crazy-max Might be flaky. Don't know any change in the past days.

[dhopkalo]

when i use docker context with remote SSH I also have the next error

docker buildx build .
...
[+] Building 0.0s (0/0)
WARN[0000] commandConn.CloseWrite: commandconn: failed to wait: signal: killed
WARN[0000] commandConn.CloseRead: commandconn: failed to wait: signal: killed
WARN[0000] commandConn.CloseWrite: commandconn: failed to wait: signal: killed
[+] Building 0.0s (0/0)
error: failed to get status: rpc error: code = Unavailable desc = connection error: desc = "transport: failed to write client preface: write |1: broken pipe"
74637 v0.6.1-docker /usr/local/lib/docker/cli-plugins/docker-buildx --debug buildx build --platform linux/amd64 .
github.com/moby/buildkit/client.(*Client).solve.func4
	/go/src/github.com/docker/buildx/vendor/github.com/moby/buildkit/client/solve.go:249
golang.org/x/sync/errgroup.(*Group).Go.func1
	/go/src/github.com/docker/buildx/vendor/golang.org/x/sync/errgroup/errgroup.go:57
runtime.goexit
	/usr/local/go/src/runtime/asm_amd64.s:1371

only change that was done for this part of code is replacing opentracing to opentelemetry lib

https://github.com/tonistiigi/buildx/blame/9d884501186b2269d341df6a4242627a70715c46/vendor/github.com/moby/buildkit/client/solve.go#L96

but it somehow damaged this part for case when we use remote ssh docker context builder

https://github.com/tonistiigi/buildx/blame/9d884501186b2269d341df6a4242627a70715c46/vendor/github.com/moby/buildkit/client/solve.go#L249

#737

[tonistiigi]

@bobrik @drefixs #741