Using OpenTelemetry in F# - docker

Question

I have a collector running in a docker container with this config file:
receivers:
otlp:
protocols:
grpc:
http:
processors:
batch:
exporters:
logging:
loglevel: debug
service:
pipelines:
traces:
receivers: [otlp]
processors: [batch]
exporters: [logging]
metrics:
receivers: [otlp]
processors: [batch]
exporters: [logging]
logs:
receivers: [otlp]
processors: [batch]
exporters: [logging]
and using this command:
docker run -p 4317:4317 -v /path/to/yaml/file:/etc/otel-collector-config.yaml otel/opentelemetry-collector:latest --config=/etc/otel-collector-config.yaml
and a console app in F# re-written using the same configuration as the C# example here:
https://opentelemetry.io/docs/instrumentation/net/getting-started/#console-application
open System
open System.Diagnostics
open OpenTelemetry.Exporter
open OpenTelemetry
open OpenTelemetry.Trace
open OpenTelemetry.Resources
open Trigger.Reports.Core
[<EntryPoint>]
let main args =
let collectorEndpoint : string = ""
let serviceName : string = "my-service"
let tracerProvider : TracerProvider =
Sdk.CreateTracerProviderBuilder()
.AddOtlpExporter( fun opt ->
opt.Endpoint <- Uri "http://localhost:4317"
)
.AddSource(serviceName)
.SetResourceBuilder(ResourceBuilder.CreateDefault().AddService(serviceName))
.AddConsoleExporter()
.Build()
let myActivitySource = new ActivitySource(serviceName)
use activity = myActivitySource.StartActivity("SayHello")
activity.SetTag("foo", 1)
0
The traces go to the console exporter but not to the Docker container, from the what I can see I've set both the app and collector up correctly.
Any help would be much appreciated.