feat(infra): Tempo + Prometheus + Grafana observability backplane in compose (refs #122)

Three built images on the cg network with config baked in: Tempo (OTLP ingest,
ports 4317/4318), Prometheus, and Grafana with both datasources auto-provisioned.
Config lives in infra/observability/. The verify-observability step runs early in
CI verify-stack; the three containers are added to the failure log-dump list.
Tempo's Grafana plugin has no datasource /health method, so the check proves
Tempo reachability through Grafana's datasource proxy instead.

refs #122
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2026-07-23 12:46:54 +02:00
parent f12e9ce746
commit f29a8598fd
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# Tempo with our config baked in — so it reaches sibling containers on the CI
# runner without the external-config-volume dance the upstream CG images need.
FROM grafana/tempo:2.6.1
COPY tempo.yaml /etc/tempo.yaml