✨ Update Docker Compose configuration to enhance observability with health checks for Jaeger and OpenTelemetry Collector. Modify telemetry settings in the development configuration to enable metrics collection. Adjust endpoint settings for Jaeger in the OpenTelemetry Collector configuration.

docker-compose.dev.yml

@@ -82,6 +82,8 @@ services:
       OTEL_EXPORTER_OTLP_ENDPOINT: http://otel-collector:4318
 
   otel-collector:
+    # Receives OTLP HTTP(4318)/gRPC(4317) traffic from the host dev app.
+    # Forwarding of traces/metrics is defined in configs/otel-collector.dev.yaml.
     image: otel/opentelemetry-collector-contrib:0.99.0
     command:
       - "--config=/etc/otelcol/config.yaml"
@@ -105,6 +107,12 @@ services:
     environment:
       COLLECTOR_OTLP_ENABLED: "true"
       LOG_LEVEL: debug
+    healthcheck:
+      test: ["CMD-SHELL", "wget -qO- http://localhost:16686 2>/dev/null | grep -q Jaeger"]
+      interval: 10s
+      timeout: 3s
+      retries: 6
+      start_period: 5s
     networks:
       - devnet