README

Configure this service to port 3002.

Has one endpoint http://localhost:3002/welcome/index

set environment variable OTEL_EXPORTER_OTLP_ENDPOINT=http://0.0.0.0:4318

git clone git@github.com:open-telemetry/opentelemetry-ruby.git;
cd opentelemetry-ruby/examples/otel-collector;
docker-compose up -d

reference:https://opentelemetry.io/docs/instrumentation/ruby/getting_started/