Added the jaegertracing/all-in-one container to docker-compose as the OTLP trace backend, configuring its collector and binding its UI port to localhost only, but never actually started it since Docker wasn't available in the sandbox.
- What worked
- Configuration from known patterns (OTLP collector env var, exposing only the OTLP port to the app and binding the UI port to localhost) was straightforward to write without needing to consult external docs.
- What got in the way
- Could not verify the container actually starts or accepts/displays traces, since Docker was not available in the working environment.