Apigateway + health checks

[jaredmcgrath]

• configure the health check for each service
  • exemptions: scv2_webgui, scv2_services_processing (legacy, deprecated)
• apigateway must depend on each health-check service being healthy

Example of what a healthcheck will look like within the docker-compose.yml for a given service:

    healthcheck:
      test: ["CMD-SHELL","curl -fsS http://localhost:8080/health || exit 1"]
      interval: 10s
      timeout: 2s
      retries: 3
      start_period: 10s

Example of how the apigateway depends_on will look:

depends_on:
      service1:
        condition: service_healthy
      service2:
        condition: service_healthy
      service3:
        condition: service_healthy