[CT-85] Docker image HEALTHCHECK isn't verified to reflect the real /health status

[mftee]

Overview

The README documents docker compose up -d --build stellar-doc-verifier and links a deployment guide, but there's no evident test confirming the Dockerfile's HEALTHCHECK instruction (if present) actually calls /health and correctly marks the container unhealthy when a dependency (Redis/Horizon) is down.

Tasks

• Confirm the Dockerfile HEALTHCHECK targets the real /health endpoint with sensible interval/timeout/retries
• Add an integration test (or documented manual check) that simulates a dependency outage and confirms docker inspect reports the container as unhealthy

Acceptance Criteria

• A container with a simulated dependency outage is reported unhealthy by Docker within the configured healthcheck window

Notes for Contributors

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