Update docker image in examples/demo from 0.88.0 to 0.116.1 (Closes #37031)

[apolzek]

Update docker image and collector configuration in examples/demo to keep metrics working on port 8888

The gap between versions 0.88.0 and 0.116.1 is widening

Description

Update docker image used in the example from otel/opentelemetry-collector:0.88.0 to otel/opentelemetry-collector:0.116.1. This update requires some changes to the collector configuration (otel-collector-config.yaml) due to a breaking change in the collector. In version 0.116.1, the collector no longer exposes configurations on 0.0.0.0 by default.

Collector configuration to keep metrics working on port 8888

  telemetry:
    metrics:
      readers:
        - pull:
            exporter:
              prometheus:
                host: '0.0.0.0'
                port: 8888

Link to tracking issue

Closes #37031

Testing

• Traces are exactly the same in Jaeger after updating the image/config
• Traces are exactly the same in Zipkin after updating the image/config
• Metrics endpoint 8889 is working /metrics
• Metrics endpoint 8888 is working /metrics (after adjustment in the collector at service/telemetry/metrics/readers)

cd examples/demo/ && docker compose up

✔️ All services are up and running
✔️ Metric logs are visible
✔️ Trace logs are visible
✔️ Client and server tracing are available in both Zipkin and Jaeger

otel-collector-1     | 2025-01-07T10:43:29.029Z info    Traces  {"kind": "exporter", "data_type": "traces", "name": "debug", "resource spans": 1, "spans": 8}
otel-collector-1     | 2025-01-07T10:43:29.029Z info    Metrics {"kind": "exporter", "data_type": "metrics", "name": "debug", "resource metrics": 1, "metrics": 7, "data points": 7}

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: apolzek / name: Vinícius Batista (dd2a56f, b854b40, 556352e)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.63%. Comparing base (165a18f) to head (556352e).
Report is 18 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #37063   +/-   ##
=======================================
  Coverage   79.62%   79.63%           
=======================================
  Files        2224     2224           
  Lines      210393   210393           
=======================================
+ Hits       167530   167541   +11     
+ Misses      37244    37237    -7     
+ Partials     5619     5615    -4     

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[codeboten]

I'd suggest moving this configuration from .env into the docker compose file directly so that renovate can keep this updated in the future

[codeboten]

Thanks!